i recently paid 750 for my 1.8hlx with 58k and lots of tax and test, its very clean and an absolute bargain, all because it grinds going into 2nd, a new gearbox is nothing to worry about but it has a big effect of the value, most people dont want to buy a car that needs things fixing. i prefer to buy cars with problems, in fact pretty much every car i've ever bought has been cheap because of one problem or another. my 1.6sx bravo had a faulty injector so i paid 365, it only cost me a fiver to fix and i recently sold it for 950. my advice is to never sell a faulty car, fix it and charge more.