That Inno looks like a pretty good buy. That vintage should be a 1275 with disc brakes...seems cheap by a couple thou and makes me wonder what's wrong with it. Looks like it has a standard BMC grille in it, but it IS an Inno judging by the headlamp rings and repeaters.
Turkys...proceed with caution. Some of his stuff is a little flaky. Not that you can't get a decent car from him, but I've heard both pros and neg from folks about that place.
Do NOT buy a car from a guy named Bill Cox in NC. He's a crook.
USDM means nothing. RHD Minis are actually almost more desirable. These cars are way more expensive than Spridgets for a couple reasons...they are cuter, more usable (proper windows and roof), and more importantly, there are fewer of them to go around so the price stays high. They are fantastic cars if you get a good one, absolute nightmares if you don't. If you decide to shop for one you need to get educated heavily before committing. Rust is unbelievably bad in these. You need to learn about wet and dry suspensions, cars from GB, NZ, AU and elsewhere, 848, 998, 1275 and other displacements, sliding or crank windows...the list goes on. And then there's the whole reVIN business with not-so-legal cars being brought in and titled as earlier cars, something you have to decide if you can live with or not.
I wrote a little "Buying a Mini in the USA" article for my web site you may like: http://mongrelmotorsports.homestead.com/Mini.html