I agree, there always are cheaper sources somewhere. Over the decades (ouch!) I've used everything from flea markets to mom and pop surplus stores to multi-national distributors. But for someone building just one or two (of anything), there are acrually very few nationally known, reliable, cheap sources. Hosfelt used to be very good, but lately their inventory is down and their charges are up. Hard to beat Mouser, considering who owns them.
Do you photo-expose your pc boards, or direct etch each one?