Like Johnnie Crab, I ordered one of the ARTEC mudbucker clones of the original Gibson EB0 mudbucker. http://www.ebay.com/itm/Artec-Custom...item25768acd3b
In my case, I bought it because I was (and am) doing a complete rebuilt of a previously modified '62 EB0, and I really had no wish to subject the original Gibby pickup's 50 year-old wiring to repeated installations and removals, soldering and unsolderings, etc.
I figured one of the ARTEC's would be sufficient for experiment and development purposes - I'm mating it with a Fender JB neck pickup in the bridge position [no, I didn't put it there, and it's a long story which you can read elsewhere on the forum. The process is a bit like mating a beaver with a skunk - one chews the heck out of everything in sight, and the other is very pretty, but needs to be approached with a certain amount of caution].
I really only wanted to say that so far, I've bee pleasantly surprised by the Artec mudbucker. I was prepared, at $30 or so, to be underwhelmed, but it's actually not bad at all - pretty decent, in fact, and the price (and service from the supplier) amazing.
I won't go so far as to say I'd put an Artec in over a DiMarzio or similar high-end pickup, but I've paid more for well known name-brand pickups that sounded worse than this one.
Some folks have dissed the Artec mudbucker and reported bad experiences; I can only say that this one performs quite well. When all the overhauling is done, and I put the original Gibson back in, I'm sure I'll notice a difference. But I'll hang on to the Artec for a "project" bass sometime in the future.
Good luck with it.