Prime Day's cheap memory cards are still up to 56% off for today only

SanDisk Ultra 512GB SD card:  $99.99 $43.99 at Amazon
Save $55 - Get a huge 56% off this 512GB microSD card. The Nintendo Switch doesn't have masses of internal memory, so a sizable card is a handy way to download heaps of games to take on the go. You can't go far wrong with this one – 512GB will likely take your whole gaming library, and SanDisk is a reliable brand.

SanDisk microSDXC UHS-1 card (512GB): $129.99 $67.99 at Amazon
Save $62 - You don't necessarily need a Nintendo-branded card for your Switch storage, but it's hard to resist some of SanDisk's licensed designs. This Animal Crossing-themed card is particularly nice and has never been cheaper than in this special Prime Day October discount.

SanDisk Ultra 1TB SD card:  $199.99 $97.99 at Amazon
Save $102 - We've never seen this massive 1TB card dip below the $100 mark before, which makes this Prime Day deal a steal. It's a great choice for your Steam Deck Library thanks to its capacity and claimed 120MB/s transfer and read speeds, which should mean some solid game-load times. 

Samsung Pro Plus (256GB): $54.99 $27.99 at Amazon
Save $27 - This 256GB card has just matched its lowest-ever price, which it hit during Prime Day earlier this year. Samsung's Pro Plus cards are solid alternatives to SanDisk's Ultra series, with this one promising 160MB/s read speeds and 120MB/s write speeds, all back up by a ten-year warranty.

SanDisk 512GB Extreme Pro SDXC UHS-I Card $109.70 $86.99 at Amazon
Save $22 – If you need a card that'll last you all day, while offering solid continuous shooting speeds and 4K video, this 512GB Extreme Pro card is worth snapping up. It serves up very decent 90MB/s shooting speeds and 170MB/s transfer speeds, and has never been cheaper than this.

PNY 64GB EliteX-Pro90 UHS-II Card $109.70 $86.99 at Amazon
Save $29 – If you need to unlock UHS-II speeds on your compatible camera, then this card offers great value right now. This 64GB version is capable of extensive burst shooting and speedy image transfers to your computer, while offering a sturdy build that can withstand water splashes or shocks. It's never before dropped to this price either.

SanDisk 128GB Extreme Pro CFexpress Type B $249.99 $109.99 at Amazon
Save $140 – Got a relatively new mirrorless camera from Canon, Nikon or Panasonic? You're probably on the hunt for a bargain CFexpress Type B card, and this is it. SanDisk's 128GB card has only once before dropped to this price, and that was for one day only. It promises speedy 1,700MB/s read speeds and 1,400MB/s write speeds, making it ideal for sports shooting or raw 4K video.

SanDisk Ultra 400GB SD card:  £70.00 £39.99 at Amazon
Save £37 - This deal brings an impressive 48% saving on SanDisk's 400GB card, which promises fast 120MB/s transfer speeds and has never been cheaper than this. That capacity should swallow your entire gaming library, so it's a real set-and-forget option for Switch owners. 

SanDisk microSDXC UHS-1 card (512GB): £99.99 £66.99 at Amazon
Save £21 - It might not quite offer the savings that Amazon claims (this card has most recently been on sale for £99.99, rather than the £160.99 listed), but this is still an excellent deal for this Nintendo-licensed card. The price matches its previous Prime Day low and the card promises speedy 100MB/s transfer speeds.

SanDisk Extreme UHS-I (256GB): £36.99 £16.99 at Amazon
Save £20 - If your Steam Deck collection mainly consists of smaller indie titles, this 54% discount on SanDisk's 128GB card makes it a great buy. The 256GB version of this card currently costs 3.5x as much and you get 160MB/s read speeds for fast game-load times.

Lexar Play UHS-I (512GB): £62.99 £44.99 at Amazon
Save £18 - It look like more of a Nintendo Switch card, but there's no reason why this Lexar option won't do a fine job of looking after your large Steam games library, too. This 512GB model has only been this cheap once before and it offers very solid read speeds of up to 150MB/s.

SanDisk 128GB Extreme Pro SDXC UHS-I Card £42.99 £23.49 at Amazon
Save £20 – A hefty 45% price cut takes this 128GB card down to an impressively low price. It's a real steal for anyone who needs a mid-range card for their mirrorless camera, thanks to its 90MB/s write speeds and 170MB/s read speeds.

SanDisk Extreme Pro 128GB UHS-II Card: £201.99 £159.49 at Amazon
Save £43 – If you need a super-high ceiling on the performance of your SD card, this deal is a worthy investment. Whether you're shooting 8K video or intensive bursts, its 260MB/s write speeds and 300MB/s write speeds will have you covered. We've only once seen this card briefly drop below this price before.