There are a ton of TT's that come mostly pre-setup.
Pro-Ject
Techniques
MO-Fi
That's just off the top of my head. Think if you go to any local Stereo store, they will setup the TT for you for free if you buy from them. My local places will do a free setup if you buy a new cart from them. Really most new standard style TT's are not overlay hard to setup, if you have the tools, with a little knowledge they only take 30-1hr to get dialed in.
For instance, my Pro-Ject TT took about 20min to get running from unboxing, when I swapped carts on it, took about 45min to dial everything in. But it was my first cart swap, being paranoid to mess it up, rechecked everything several times.