Guides
Buy flash storage without getting fleeced
Short, opinionated guides to the three things that actually decide whether a card is a good buy — what it costs per gigabyte, whether it's fast enough for your device, and whether it's the real thing.
Price per gigabyte is the only number that matters
Why sticker price lies, how we score value, and why flash prices are so volatile right now.
Read the guide →The speed-class markings, decoded
Class 10, U3, V30, A2, UHS-II, SD Express — what each marking promises and which ones you can ignore.
Read the guide →How to spot a counterfeit microSD card
Vet a listing before you buy, understand what we flag, and test a card the moment it arrives.
Read the guide →Frequently asked questions
What Micro SD Deals does, where our prices come from, and where our limits are.
Read the FAQ →