Ha ha, four dollars! That's awesomedepends what you need it for. factory manuals are the best but be prepared to spend alot of money. just basic crap, look on half.com and get whatevers cheapest, haynes or chilton are pretty much the same thing (i've had both for different cars, dont prefer one over the other)
i got my chilton on half.com for $.75 + shipping, so like $4 total and its in perfect condition.