I bought a set of brakes and levers for about $25 a month ago. You can find deals on the stuff if you are patient.

If you are willing to wait you can get some amazing deals. I got a set of 600 Ultegra wheels with Araya rims for $10 because the seller misspelled "Araya" as "Alaya". The trick is not to search for things, but rather to patiently comb through the category listings until a good deal shows up.