Guides: the numbers behind the tools
Every guide starts from a question people actually search, answers it with worked examples, and links the free tool that does the math. Figures carry a verification date — when we quote a fee, we checked the publisher's own page.
How Much to Charge for 3D Prints
How to price 3D prints in 2026: the real cost formula, the ×10-material and $2–4 per print-hour rules, failure-rate math and marketplace fees — with worked examples.
Read the guideGuide · updated 1 Oct 2026PayPal Fees in 2026: Every Rate After the August Change
PayPal’s current US fee schedule after the Aug 1, 2026 change: 3.49% + fixed checkout, Pay Later 4.99%, the 2.99% G&S option, cross-border and FX markups — verified with worked examples.
Read the guideGuide · updated 1 Oct 2026How Much Does PayPal Take From a $100 Payment?
PayPal takes $3.98 from a $100 domestic US payment (3.49% + $0.49), so you receive $96.02. Fees on $10 to $5,000, international cases and gross-up, all worked.
Read the guideGuide · updated 1 Oct 2026The 3D Printing Cost Formula
The real 3D printing cost formula: (material + electricity + depreciation) ÷ (1 − failure rate) + labour — with 2026 filament prices and a worked example.
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