Every in-stock microSD card we track, cheapest per gigabyte first, from $0.1494/GB across 8 brands. Each card carries a verdict comparing it against its own tracked record rather than against other cards. Pack listings show the per-card price so the ranking stays honest.
Live prices updated · 110 cards tracked · median $0.2637/GB
The ranking is cost per gigabyte, which is the only basis on which a 64GB card and a 1TB card can be compared at all. It is worth knowing that cheapest per gigabyte and best buy are different questions here: the cheapest rows are almost always entry-tier UHS-I cards, which are the correct choice for general storage and the wrong choice for continuous recording, high-bitrate video, or a Switch 2.
Start from what your device documents it needs - the speed-mark decoder explains what each certification actually guarantees - and then rank by cost per gigabyte inside the set that qualifies. Paying above the requirement buys a number on a box rather than a difference you will see.
The verdict badges compare a card to itself. They are computed from that card's own recorded prices, so an expensive card sitting at the bottom of its own range shows AT/NEAR LOW while remaining expensive. They answer “is this a good moment to buy this card”, not “is this a good card”. The only price displayed anywhere on this page is the current one.
It compares this card's current price against its own tracked record, not against other cards. AT/NEAR LOW means it is close to the cheapest we have recorded for it; ELEVATED means it is above where it usually sits; TRACKING means we have not held it long enough to say. The badge is the only thing we publish from that history - we do not show past prices.
Because a $12 card and a $90 card are not comparable on price and are perfectly comparable per gigabyte. Cost per gigabyte is the only figure that tells you whether the larger card is actually better value, and in this category it frequently is not - the premium tiers and the newest formats often cost more per gigabyte at higher capacities, not less.
Every price shown is the PER-CARD price, and the pack column tells you when a listing sells more than one. That keeps the cost-per-gigabyte column honest - a card from a five-pack and a single card are compared on the same basis. The amount you pay at checkout is the per-card figure multiplied by the pack size.
The scraper runs every thirty minutes and works through the catalogue in slices, so a given card is re-checked every few hours. The timestamp on this page is the newest observation behind it. Prices on Amazon can change between our check and your click, which is why the buy link goes to the live listing.
Only if it meets your device's requirement. The cheapest card per gigabyte is usually an entry-tier UHS-I card, which is the right answer for general phone storage and the wrong answer for 4K video capture, a dashcam, or a Switch 2. Check the requirement first on the device pages, then rank by cost per gigabyte within what qualifies.
Every card here passed our seeding gates: an established manufacturer at the front of the title, a live in-stock offer verified against Amazon's catalogue API, and a price above the computed plausibility floor for its capacity. That is screening, not a guarantee, and we would still test a new card's full capacity before trusting it.