TL;DR: You can prep effectively for the GRE for under $50. ETS PowerPrep (free) gives you two real adaptive tests. The Official GRE Guide costs $25 and includes 200+ real questions. The Deferred MBA's GRE course at $25/month was built specifically for deferred MBA applicants and includes 19,000+ practice questions, concept lessons, a 1,200-word vocabulary system, and a free diagnostic. The floor: ETS materials plus a focused prep tool has produced 160+ scorers.
The GRE prep industry is not designed for you. Every course and book assumes you have $300 to spare, free evenings, and no competing priorities. You have a class schedule, a part-time job or unpaid internship, recruiting season, and a GPA to protect. The $400 course that works for a 28-year-old analyst does not automatically work for a junior in April.
Here's what does work, and what it actually costs.
Where Do You Find Real GRE Questions? ETS Official Materials
Start here before you buy anything else. ETS, the company that makes the GRE, publishes free and low-cost official materials with real test questions. That matters. Every third-party question bank is a simulation. The actual test is written by ETS.
Free resources from ETS:
- PowerPrep Online: two full-length computer-adaptive practice tests, free at ets.org. These are the closest thing to the real test you can get without sitting in the testing center.
- Official GRE Practice Questions: a free PDF of sample questions by section type, downloadable from ETS.
The paid ETS options worth considering:
- Official GRE Guide (~$25 on Amazon): includes two additional full-length tests plus hundreds of practice questions from real tests. At $25, this is the single highest-ROI GRE purchase you can make.
- PowerPrep Plus (~$45 each): two more computer-adaptive tests with scoring explanations. If you're preparing seriously, one of these is worth the cost.
Total budget if you only use ETS: $0–$70.
The Best Tool for Deferred MBA Applicants: The TDMBA GRE Course
The Deferred MBA's GRE course costs $25 per month and was built specifically for students applying to deferred MBA programs. That distinction matters. Generic prep courses teach you the GRE in a vacuum. This one is calibrated to the score ranges that HBS 2+2, Stanford GSB, Wharton Moelis, and the rest of the deferred programs actually require.
What you get: 19,000+ practice questions with detailed explanations, concept lessons that teach GRE quant strategy through focused modules (triangle rules, number properties, ratio setups, data interpretation traps), a 1,200-word vocabulary system built around the words that actually appear on the test, a free diagnostic to find your starting point, and score tracking so you can see where you're improving.
The concept lessons explain how to think through question types quickly rather than grinding through hundreds of practice problems hoping it clicks. The vocabulary system teaches words in context rather than random flashcard lists, which helps with retention.
At $25/month, you can subscribe for two months of focused prep and spend $50 total. That's less than the price of the Official GRE Guide and a single PowerPrep Plus test combined, and you get significantly more practice material calibrated to your actual target.
Free Quant Supplement: Khan Academy
If your quant foundation is weak (you haven't taken calculus or stats recently, or you skipped math-heavy courses), Khan Academy fills the gaps for free.
The GRE Quant section tests arithmetic, algebra, geometry, and data interpretation. It does not test calculus. If you're a humanities or social science major who's been avoiding numbers for two years, Khan Academy's middle school and high school math content is the fastest way to rebuild fluency before you start working GRE-specific problems.
Spend one to two weeks on Khan Academy before starting ETS practice problems if you haven't done math in a while. After that, switch fully to GRE-specific materials. Khan Academy is not calibrated to the GRE difficulty level.
Community: r/GRE
The r/GRE subreddit is better than most of what you'd pay for. It has score reports from real test takers, strategy threads broken down by question type, recommendations for free resources, and people at all score levels asking the same questions you have.
Use it for two things:
- Score reports: read posts from people who scored 162–165 on verbal or 165+ on quant and look at what they used. Filter by outcome. Ignore the "I used X course and it was great" posts without a score.
- Specific question strategies: search for the question type that's giving you trouble. Someone has already posted a thread on it.
Don't spend time doomscrolling score comparison posts. Read strategically, then close the tab and do actual practice.
The Real Cost You're Overlooking: The Test Fee
The GRE costs $220+ per attempt (varies by country). That's not nothing. And under ETS policy, you can retake it once every 21 days, up to five times per year.
The implication: if you can't prep seriously before your first attempt, don't take it yet. A mediocre first score isn't fatal, especially with ScoreSelect, which lets you choose which test date's scores you send to schools. But you're still out $220 for a low-value test.
Be honest about your prep readiness before you register. Taking the test when you're 60% ready wastes money. Taking it when you're ready, scoring well, and moving on is the actual goal.
If Your Budget Is Genuinely Zero
Some students are working through school with no discretionary spending. If that's you:
- ETS PowerPrep (free) + the free official practice PDF gets you further than most students realize.
- Your university library almost certainly has GRE prep books (Kaplan, Barron's, Princeton Review) available for checkout. You can use those without buying them.
- Quizlet has free GRE vocabulary decks made by other test takers. The Barron's High Frequency Word List is the most-used; search for it on Quizlet and you'll find multiple free versions.
- Study groups with classmates preparing for the same thing. Working through ETS practice sections together and talking through wrong answers is genuinely useful, especially for verbal reasoning.
The floor is: ETS PowerPrep + ETS Official Guide (library copy) + Quizlet vocabulary + r/GRE. That combination has produced 160+ scorers. It's not glamorous. It works.
What Expensive Courses Actually Sell You
Kaplan, Princeton Review, and other premium prep services aren't scams. Their materials are good. What you're paying $300-$500 for is primarily structure and accountability: a pre-built study plan, progress tracking, adaptive drills that adjust to your weaknesses, and the psychological effect of having spent money.
If you need external structure to study consistently, that's worth something. But if you can build your own schedule and stick to it, you don't need to pay for the structure. The underlying content (question types, strategy, vocabulary) is replicable with the resources above. The TDMBA GRE course gives you the same structure and progress tracking as premium courses at a fraction of the cost, with the added benefit of being purpose-built for deferred MBA score targets.
Most college students who build a real 90-day prep schedule around ETS official materials and a focused prep tool score within three to five points of what they would have scored with a premium course. That's within the margin of a retake anyway.
What Comes After the GRE
Your GRE score gets you over a floor. HBS 2+2 and Stanford GSB admit students with scores in the 160–165 range on both sections, but they also reject students with those same scores. The test is not the application.
Once your score is competitive, your time goes to essays, recommenders, and narrative. That's where the actual outcome gets determined. The students who allocate disproportionate time and money to test prep at the expense of their application story misread what adcoms are actually evaluating.
The TDMBA GRE course is $25 per month and includes a free diagnostic, concept lessons, 19,000+ practice questions, and a vocabulary system built for MBA program targets. The playbook's test strategy module covers how prep fits into your full application timeline. And if you want direct feedback on your profile and application strategy, reach out about coaching.
The GRE is solvable. You don't need $500 to solve it.
What to Do Next
- Download ETS PowerPrep from ets.org and take the first free practice test this week before buying anything.
- Check your university library catalog for GRE prep books from Kaplan, Barron's, or Princeton Review before spending money.
- Take the free TDMBA diagnostic to find your starting point, then use the concept lessons and practice questions to target your weakest areas.
- Search Quizlet for the Barron's High Frequency Word List and add it to your daily review rotation.
- Once you have a baseline from PowerPrep, build a 90-day study schedule around ETS official materials before adding any third-party resources.
