Very good price indeed!! I think I paid £50 for my unit. (And 60$ for the gyro that you still need)
I have 8 pcb's that are left overs from the two prototypes that I've built. I will build them into GPS units without the cpu and without the case and _maybe_ without GPS and gyro. With all interface electronics (regulators, op's and some passive components). I should be able to make 8 "down to the bone" units like that for $100 + p&p. (pcb was a little over $50. Gyro op-amp was $18)
PM me if you are interested in such a kit.