What with living where I do and the absurd prices on guitars here I have had to buy some online, sight unseen (well, except for the pics on the website). And it has often worked out extremely well. And even when I can play the guitar first it is so poorly set up with super light strings which are rusting off the fretboard that it doesn't really help much! Now that I have brought my latest guitar home, the Thinline Tele, it has impressed me a lot more than it did in the shop. Even though the action was set right (which it never is!) it felt good but not great in the store and the amps I had to try it with sounded very average. But I took a punt because I felt something good was there and it was. Fortunately.
Unfortunately I'm one of those who don't get on with a 7 1/4" radius. Which is good I guess - I don't need to look at the new Fender RIs.