A great possible option for making the PCB for ELLO 1A (as well as pretty much any other PCB), is SEEED Studio

SEEED is a one-stop shop for PCB and assembly, and delivers great quality at great price. They also offer 3D printing service (which I am planning to test soon), as well as an internal market for projects.

For the ELLO's board, the quote I get from SEEED's online system matches the JLC's which I used with the prototypes, so thumbs up for that too.