I agree with you Karma, in most cases I'd prefer to build something myself too. Cheaper though, not always, damn electronics soemtimes half and quarter in price if you buy enough -.-;
In regards to the qkits unit, while sure its a quick and dirty solution you could build yourself for about $10-15, my own unit is intended to be quite a bit more advanced

Not to mention programmed

But i'll let you pass judgement on the product when I actually build it.
To Flint, yeah I wouldn't mind posting plans so people with the assembly and circuit building skills could do it themselves. Same thin with alot of mosfet and other conversions. Just paying for parts and labour in the end... always depends whose labour the buyer deems is worth the most/least ammount of money