I received other offer for “really the best” PCB manufacturing.
But, this looks very well (on the website)
5pcs 100×100 – 1 USD
10pcs 100×100 – 2USD
Shipping: Registered Post ~10 USD, DHL ~20 USD (in my case 18 USD for Registered Post, 23 USD for DHL)
Solder mask: green, blue, white, black without fee
Fabrication: 2 – 4 days
Payment: Paypal
https://www.boktech.cc/order