I see netbooks in the mid 200 range at geeks.com a lot so with repairs running 120+ just for labor and no parts you are looking at a new netbook if that's what you want to replace it with.

Common online stores are newegg.com amazon.com geeks.com and many others.

About tablets. Do they run what you need? Would you be upset if less web sites work than your average Windows netbook/laptop?
Bob