So I really like the sound of the Fender Twin Reverb, but I can't find them for any cheaper than about $1400. Unfortunately my budget is only around $500-$750 dollars. I'll only be using it for practicing at home and some small gigs, so it'd be good to have something with less watts.

I mostly play Indie rock, and some classic rock. Radiohead, Modest Mouse, Led Zeppelin. I'd be okay with buying stuff used, but I'd prefer it used. I live in Vancouver, B.C.

Also, I play through a Led Paul Studio.

I'm surprised you can't find one of the 70s silverface twins for around that price range. Take a look at Traynor amps, they have some that are pretty fender-ish and they seem to be gaining popularity with the Indie rock crowd.

Of course, Radiohead uses Vox and Zep used Marshall, so maybe a british voiced amp would be better for you. Maybe a Vox AC15 or 30? Give them a shot and see what sounds good to you.
Highway One Tele (w/Custom Shop 51 Nocaster pickups)
Standard Tele (modded to Nashville specs)
Reverend Roundhouse

Orange Rockerverb 50 MKI
Vox AC4c1
Jet City JCA20H

And pedals!

"Shiva opens her arms now..
...to make sure I don't get too far"