Dave has roughly 6 items available per day. Due to space constraints, they don't have the capability of doing more. They do a good job of mixing things up so that the same items do not appear too frequently.
On the downside, things like sandwiches and burgers are prepared ahead of time. They are stored in heating trays and served accordingly. So quality often suffers.
The best items to get are casserole or soup type dishes. They live the best in the heating tray environment.
A typical meal tends to be between $6 and $7. This does not include drink or dessert.
Pros: fast but not fast foo, good variety
Cons: heating trays are bad, expensive