Ditto on what chefrvitale said. You'd be surprised at how cheap you can get high quality, commercial grade restaurant equipment. Also, check restaurant supply houses, they often times run closeout sales, or can offer you a lead in finding what you need.
What I have learned from others is that, when you "cheap-out" you get what you pay for. Spend a little extra and get something that will last and last, negating the initial cost several times over.