when i wrecked my CRX last year, it only cost me 300ish to buy it back... and it was through allstate... so it might not cost that much.
If you get another rex, you could get a shell or something, since you have soo many parts accessable from this one.. its up to you really. i love the rex, and i would do something to keep one... either buying yours and another to fix up cheap, or getting another one and keeping this one for parts.. thats what i would do.. oh wait.. thats what i am doing now