There are ALOT of great Nippon Ichi games that I enjoy alot.
Makai Kingdom, Phantom Brave, La Pucelle Tactics (havent played yet), Disgaea 2 (might not be 20 bucks yet).
All of the above are strat-rpgs that offer an assload of content for people that play it. They're all kind of the same though, with minor alterations. Phantom brave you use items such as trees and rocks as weapons, and you fuse them into one of these items for about 5 turns, then they revert back to nomalcy. Disgaea uses geo-squares that do something special (-20 armor, no entry, improved attacks, invincibility). Makai kingdom uses tanks and facililities.
These are some AMAZING rpgs that everyone should pick up.