What categories of goods are available?

The Stocklear marketplace contains products graded from A to D according to their quality:

A: New, works perfectly

B: Like new, works perfectly, may have slight cosmetic scratches, no bumps or deep scratches

C: Partially functional inventory and / or inventory with major cosmetic damage, including deep scratches and bumps, accessories may not be included

D: Inventory not tested or not functional, missing parts and accessories