In addition to the Eljer Titan toilet listed here (which is now clearanced at around $55 for just the tank & bowl), Lowes also has clearanced a Crane Plumbing ComfortWidth Toilet-to-Go Model 3913 (UPC 088754099877) for $69.50. I don't remember it's original price, either $278 or $298, the receipt doesn't show it.

This toilet is high-performance, ADA approved, and includes everything you need to install, except the supply line.

In-store only and since it's clearance, YMMV. I purchased in La Plata, MD.

Specs (PDF) from the Crane Plumbing Web site.

Green for you (must have been that spinach I ate). Better not be any threadcrappers or I'll pull the lever on them personally.

The Alpharetta, GA store has three or four of these, but they're $208.50 (had them look up price). Had them check the area, too, and no other store (within 25 mi.) had stock. I managed to find two of the Eljer models. Those in the Alpharetta area might keep an eye on these if you need one.