I bought the two for $600 each two years ago. I got another two Drag Only trans (close ratio, spools, everything!) last year through Evil Ed.
He has a go-to-guy a in Maryland (I think) that does this kinda thing for him.
I just recently picked up a Pro-Street/Freeway Flyer from one of the guys who puts on the Litchfield show for $300. It's a Rancho IRS, built a few years ago, but never installed, totally brand new. You can usually find a good trans for around a grand through most folks on the net, less if you throw them a core and have it shipped without the nose cone. But a specialty race shop can do everything at an even lower price. The same parts are used by everyone. Type II fourths, 3.88 R&P, four gear spiders, aluminum HD side plates, etc. it's all off the shelf, nothing special going on at all.
It gets to be kind of a gyp for regular mail order folks in a way. You pay your $$ and get something from one of the regular outlets and think that your doing good, but if you are at the track or drags and ask the guy next to you where he had his transaxle built, you can slide into another world where the mark-up is non-existent and the fabrication is amazing and the parts are nuke proof and everything is race proven, and you can score last year's tried and true trans for next to nothing, 'cause this year's trans is even better.
For a street car, most race parts can't be beat. Of course for a race car, you want what he's buying, NOT what he's selling.
OF course . . . we're thrifty here in New England and NEVER pay full price. It's a Yankee Trader kinda thing.