No idea. I think it depends on their workload. With proper tools and equipments, it should be a piece of cake for cytron. There are only 8 transistors (may be mosfet), some diodes (may be zeners) and a 18F pic chip. Not many components to check.
I just bought 2 more UIC00B recently and besides I already have 2 more programmers that uses serial port which I homebrewed 2 yesrs ago. They are still working.
Allen