That sounds like a fun project, I'm not sure why it never occurred to me to try it. I've used Seeed Studio many times for PCBs and have been very impressed. The quality is quite good, delivery can take close to a month but the price is a fraction that of the next lowest cost fab house I've found. The base price is $9.90, with larger sized boards adding on top of the base price. The dimensions they list are the maximum dimensions, smaller boards are fine. I recently had a batch of 10cmx10cm PCBs made and for 10 boards it worked out to only $2.50 per board. Shipping is free if you spend $50 so I get 2-3 designs ready to go and order them all at once.

Somebody mentioned making some IIfx RAM SIMMs, do you have the PCB layout available for those? It's something I'd be interested in doing if I ever get my (badly corroded) IIfx resurrected.