I've checked out this manufacturer that fellow "pcbfreak" mentions above and it sure is very cheap indeed. I've never tried them before but I am plannning to do so for my next mini-project.
I also saw that they have a big range of available pcb colours that are pretty affordable.
Concering the quality and the durabilty of the pcb:
I usually experiment on my circuits and this process many times I need to disassemble and remove soldered parts and solder new ones. I need to have a good quality pcb for the pads not to be damaged after 2 or 3 component removals. Did you try to disassemble any of your completed circuits? Was the pcb intact after that?
thanks in advance