Are the Connect Wireless Sticks still being manufactured? Or could there be some supply or manufacturing slowdown?

I’ve been watching Amazon for many months and the 128, 200 and 256 GB sticks have only been available from resellers (at very high prices). Even worse, lately the smaller sizes have been following the same trend.

I have two of these sticks that I use every single day and I hate the idea of beig unable to replace them when I wear them out.