The 2230 form factor continues to see price drops.
This modelcosts 80, making it still quite affordable.
To install this SSD in your Steam Deck, it’s best to follow along with a guide online.

iFixit is probably the best-known guide maker, so take a look attheir instructions.
WD’s SN740 Pyrite is80 for a 1TB model, while the Sabrent Rocket 4.0 is85 for 1TB.