It's a cost benefit analysis issue. A have vs. have not issue.
Seriously though - that dock from iphone5mod does look like a toilet for the iPhone 5. If that costs more than $10, I would prefer to spend $150 and get something more durable, well designed, and well constructed - and preferably made in America (gotta help the local economy at the same time if possible).
The priority for me to purchase any product isn't how much something costs or brand name - it's quality. Not all expensive brand name items have the best quality. At the same token cheap items almost always fall short of the measure of quality. The sweet spot lies often in the middle - paying a little more often yields greater product satisfaction and durability.