I bought my cab from KY Game Exchange, luckily they had an all black dynamo jamma cab in great shape, but the tekken 2 board in it was flaky (the game would start acting wierd after a half hour or so of play), so I got a decent deal on it.
Maybe hit an auction in ohio? If you're not gonna make your own cab, I'd recommend buying a working cab that's in good condition (with no sideart or anything else you have to strip/redo). If you look at some of the cost breakdowns people have on the web, they spent more money restoring a cruddy cab than they would have buying a nice one to start with. The redone cruddy cabs that do actually wind up looking nice seem to have required almost as much effort, tools, and workspace as cabs built from scratch.
What price range are you looking in?