Don't forget Mouser. Or Jameco. Or Allied. Or any of a dozen other vendors.
Kind of perplexed why the O.P. thinks they have to buy thousands of chips. Of course, some suppliers do have minimum quantities for certain items, but it's easy to see this, especially if you use Digi-Key's parametric search function. Maybe the O.P. just got caught on some of those bogus web "search" pages one lands on from a Google search. Just pick a reputable electronics supplier and browse their online catalog.