Big Tex Outdoors is where I get a lot of my Glock parts

https://bigtexoutdoors.com/products/...=1440424984583

Looks like they have a complete one for $189 (save 12% more if you sign up for their mailing list) or get on the list for a stripped one $109 (out of stock). Typically, I've never had to wait more than a few weeks before getting an in-stock notice.