For those with newer Surface Pro's that have the little SSD access door, you can now get a 2TB SSD for only $125. Amazing how these prices have dropped.
Link: https://www.newegg.com/corsair-2tb-mp600-core-mini-nvme-1-4/p/N82E16820982123?sdtid=18073924&Item=N82E16820982123 Use coupon SAEN2A288 to go from $140 to $125.
Note, this is a quad-level cell design apparently.
QLC (Quad-Level Cell)
• Stores: 4 bits per cell
• Pros: High storage capacity, affordable price.
• Cons: Slower write speeds, lower endurance, and shorter lifespan.
• Best For: Light usage, budget-friendly storage