I'm looking at purchasing an old Metz buffet out of someones garage. I'm a design student and somewhat familiar with the building process but otherwise a novice.

The external finish is decent, but the veneer's at the base of the draw's are warped badly, There is a 2-3" bow on the lowest drawer, and the draw guides are off level. The piece doesn't look like its been under water at all. I think its probably just been exposed to Chicago's humid summers and cold winters in a garage for several years. The drawers are in good shape as well as the external of the cabinet. There is no visible warping anywhere except on the tracks. Is this a very bad indicator and something I should stay away from, or is it something minor that can be corrected with some braces to raise the guides back to level?

Here are a couple of pics:
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