I ordered 10 PCB’s from jlcpcb.com. The boards were 27x 37 mm but could be as large as 100 x 100 mm for the $2 prototype price for 2 sided boards. I then selected the DHL expedited delivery for $18.47. So for $20.47 I received 10 high quality PCB’s 7 days later. The PCB’s were sturdy thick (1.55 mm) boards. I have ordered other lowest cost boards from another manufacturer and those boards were only ~0.85mm thick. I did not have any issues using a 300°C soldering iron and hot air to solder the components. The board was designed using Kicad software and the Gerber files generated for the PCB worked just fine.