If you want custom cut colored glass, be prepared to pay dearly. If, in addition, you want custom cut tempered glass, you'll pay even more.
Colored glass is a specialty item and you pay due to the fact that it isn't carried by many sellers. Tempered glass is not stocked to be cut by the seller - the glass must be cut first (almost always at the factory) and then tempered. The tempering process for glass produces glass which does not accidentally break in long straight lines, which produces those dangerous long shards. But that process also prevents the glass from being intentionally broken (ie, "cut") in long straight lines.
If you do spend the megabucks on this project, don't forget to include rolling (and possibly polishing) the corners and edges of the glass before it is tempered.
You didn't specify what you are attempting to accomplish. Clear quarter inch glass cut to size, with rolled and polished corner and edges, and then lightly sandblasted to achieve an opaque finish is fairly reasonably priced. Of course, it can shatter unless you pay for tempering. Ask around at good hardware stores in your area and you'll find many leads for custom glass cutters.
If you are lucky, you may be able to find tempered glass shelves in a size which meets your needs. Check retail outlets for bookcases, entertainment centers and other furniture with glass shelves. If you find shelves that are the size that you need, then look into the cost of ordering "replacement" shelves. (For a lower cost unit, it will often be less expensive to buy the entire piece of furniture just for the shelves.) Sandblast if you need it opaque.
You can also look for thick plexiglass style materials. Colored to suit you needs, or opaque. It would be much less expensive and a lot easier to lift out of drawers.
Or you could just hide your p*rn supply or stash of dope somewhere other than the bottom of the drawers. :)
Good luck, Gideon
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Going by their web sites, neither Home Depot nor Lowes carries sheet glass, nor does Michael's Crafts.
Any ideas?