I've placed a couple orders (had some stock on Sunday and added more today for my G21 slide), but no complete experience (cannot vouch for vendor). They seem to bill immediately (not just a pending hold) and claim a 2 week delay in shipping. $35 isn't a bad deal these days :-(
http://www.natchezss.com/product.cfm?contentID=productDetail&prodID=GLMF20015
I've purchased magazines from them before the panic, good experience, delivered exactly what they said, I recommend them.
I have three on the way.
Just got an e-mail from CDNN.Fact Glock 20 mags,29.99.However only SF frame Gen4.
Natchez shooters supply had some G20 mags as well, I want to say $34.
Thanks for the link, YES I saw them too and have a couple coming my way!
FYI: Out of stock now. :-[ :'(
CW