Well, that is true for all components at digikey. You don't mass-produce stuff with components bought from DK (or avnet either, for that matter, depending on where you do your production)
I looked up a random i.MX6 processor from NXP. It’s $32.08 for one of them, and $20.95 per part when you get a reel of 500. If you need a few thousand units made, it’s perfectly reasonable to order parts from Digi-Key. You might be overpaying compared to what a good purchasing person can get you, but it’s fine for a few thousand parts, and quick and easy.
Look up any Xilinx part on Digi-Key, and there’s just a single price break at 1 unit. Even Lattice parts only go up to price breaks of 100.