DirtyPCB has been around for quite a while now, and I gave them a couple of protopack orders way back in 2015. They are a part of Where Labs, LLC and therefore a subsidiary (partner? distant relation?) of Dangerous Prototypes. The DirtyPCB site has developed extensively since then with various manufacturing offers from laser cutting to SLA 3D prints, BOM management and, of course, PCBs.

DirtyPCB really goes out of their way to set your expectations as a customer: you should expect fully functional boards, but not exquisite quality, although sometimes exquisite quality might slip through.

Final cost for a 10 board “Protopack” in the 10cm x 10cm dimension [...]