They quoted me $449 for a honda civic alternator, I'm going to have to vote -1 for competitive pricing.
I think I might be able to answer some questions, and maybe explain why the pricing is higher in some situations-
Unlike our competitors, we don't just "overwind" a whimpy little stock honda civic alternator. If we did, we could sell it for $200 and send you on your way. There are two reasons why we don't do this: (1) It is virtually impossible to get any decent output out of an alternator that small and have it maintain good durability, and (2) any attempt to increase output on an alternaor that is already pretty efficient for it's size, actually REDUCES output at lower speeds. This is something that most alternator rebuilders do not tell you when they sell you a supposed "high output" alternator.
We actually custom machine our own LARGE case alternators so that they bolt into your stock brackets. Additionally, we include necessary wiring adapter plugs, and anything else needed to make it a quick and simple bolt-in swap. This is all very labor and matierial intensive, (not to mention the fitment R&D that goes into every kit we develop) but it is the ONLY way to get real-world streetable, reliable output, especially at low RPM. I'm sure you all have seen plenty of threads:
"High output alternator, 12.2V at idle??!!"
You won't have that problem with MechMan kit.
As far as the Full-size GM's and Ford vehicles that came with a Large case alt from the factory- we sell the 260 amp model (150 at idle) for $349 shipped, so we are still cheaper than most the other guys.
I'm not trying to spam-up this thread, I just wanted to clear up some mis-information.