I would recommend the CSUSA deluxe kits only (shown). I have used a few of the others and this is the easiest and nicest of the kits. The cost is a bit higher, but considering how good they work, it is worth it.
The only drawback to this kit vs. some of the others is that you need to counterbore on of the ends to 1 1/16" to fit the mechanism. You could just bore it all the way through with 1 1/16" too, but it is much easier to find and wear out 1" bits. I use forstner bits with an extention and drill press. Oh, by the way, you will need a 1 5/8" bit as well to recess the mechanism.
I believe Daniel just sent an article off to be published on this jig, so we should have some good info very soon.
Sell them? This one is a gift, but I haven't tried real hard to sell them yet, but the ones I have made went fast.