@jeff, whatever you do, don’t go look at
3 wire, not 2 (non addressable single color) or 4 wire (non-addressable RGB), these are w2812 in a fairy wire (copper wire) setup, 66ft/200 led (so 30 led/m) also available perhaps cheaper from China (which I was going to do on 11.11 day sales, but decided to check Amazon… And yup, for next day delivery to me… Almost same price, instead of weeks of waiting? Sold.)
Ordered enough to build a massive 10x10x10 cube, and yet didn’t break the bank at all.