What you pay, what renews, and what you get back if it doesn't work for you. The API 510 exam fee is $875 for members and $1,125 for non-members, so prep that fails you costs more than its price tag. Here is the comparison.
Long Seam is one payment: $199 for the API 510 course, or $39 for a 7-day pass if your exam is days away. The course gives you 401 questions and two timed practice exams, access for at least 3 years, and a 14-day refund. The pass has a 48-hour refund. Nothing renews.
API 510 prep, side by side
Every rival figure comes from the seller's own page, read on 22 Oct 2026. We list facts only. A blank means the page did not say.
| Option | Price | Access | Renews? | Refund rule | Questions |
|---|---|---|---|---|---|
| Long Seam course and 7-day pass | $199 course, or $39 for a 7-day pass, paid once | Course: at least 3 years. Pass: 7 days | No | Course: full refund within 14 days of buying, for any reason, unless you have finished both timed practice exams. Pass: 48 hours | 401, plus 2 timed practice exams with a closed-book and an open-book part |
| api510exam.com, read 22 Oct 2026 | $19.95 for 48 hours, $49.95 for 7 days, $129.95 for 6 weeks | 48 hours, 7 days or 6 weeks | No, one-time payments | None. Its terms say all sales are final and failing an exam is not a ground for a refund | 1,000+ |
| CertCrafter, read 22 Oct 2026 | $49 | No end date listed | No | Refund if you email within 30 calendar days of purchase (policy) | 1,020, in six 170-question exams |
| Atlas API Training, read 22 Oct 2026 | $999 course | 6 months | Not stated | 48-hour money-back guarantee | Over 900 practice questions |
What the numbers add up to
- Short windows end. The api510exam.com plans end after 48 hours, 7 days or 6 weeks. Its 6-week plan is $129.95. Long Seam's course is $199 with access for at least 3 years, so a moved exam window costs you nothing more.
- All sales final means no way out. api510exam.com says so in its terms. Long Seam gives you 14 days to ask for a refund for any reason.
- Compare the refund windows. Atlas costs $999, gives you 6 months of access and 48 hours to ask for your money back. Long Seam's course is $199 with 14 days.
- CertCrafter has the lowest price. $49 buys 1,020 questions with no end date listed with a 30-day refund window. That is the lowest price on this page, and its refund window is longer than ours. Long Seam's course costs more because it adds what a bank does not: 8 lessons, 6 worked calculations and a study plan. Pick CertCrafter if all you want is questions. Pick Long Seam if you want to be taught the methods.
What you get for the $199 course
You get 8 lessons through the five Body of Knowledge sections, 6 worked calculations (corrosion rate, remaining life, inspection interval and more), a study plan, the 401-question bank, 2 timed practice exams with a closed-book part, an optional 45-minute break and an open-book part, your score by domain, and an exam-day guide.
If your exam is days away, the 7-day pass is $39 with a 48-hour refund.
Try the free 10-question check first. It needs no signup and explains every answer.
A practice score is not a prediction
No practice score, ours or anyone's, predicts your result on exam day. Use your score by domain to pick the next section to study. Our questions are original and written to the published Body of Knowledge.
Common questions
Does anything renew on Long Seam?
No. The course and the 7-day pass are one payment each. Course access lasts at least 3 years, and the pass ends after 7 days.
Can I get my money back?
Yes. On the course, full refund within 14 days of buying, for any reason, unless you have finished both timed practice exams. The 7-day pass has its own rule: full refund within 48 hours of buying, unless you have started a timed practice exam or answered 30 practice questions. One refund per customer. The refund terms have the detail.
Does Long Seam promise I will pass?
No. Nobody can promise you a pass. We promise the refund above.
Sources
- api510exam.com and terms: plans, 1,000+ questions, no auto-renewal, all sales final. Read 22 Oct 2026.
- CertCrafter and refund policy: $49, no end date listed, 1,020 questions, 30-day refund. Read 22 Oct 2026.
- Atlas API 510 online training: $999, 6 months, 48-hour money-back guarantee, practice questions. Read 22 Oct 2026.
- API 510 exam fees: see our requirements and cost guide.
- Long Seam prices and terms: the API 510 offer page and terms.