We managed to get one (two actually). Here is what it looks like in my area:
Toys R Us near us got 35 units in (we got numbers 19 and 20. One for us, one for my bros GF).
Target near me got one hundred units.
Wal * Mart by me seems to be about same as Target.
Best Buy got around 60.
So overall supply seems a LOT better than the NES Classic was. These same locations were getting 2-3 NES Classics at a time and only got about 2-3 shipments each total over it's life.