Panthers are around 300-500$ (expensive) if you're looking for an awesome kind like the nosy faly or nosy be or something with a cool pattern like that.
Veileds.. Everyone knows what veileds are.. Around 100-200$. They're still cool. Big ol' crest and usually green. But you never know, you might get lucky and end up with a bright orange veiled like that one guy here.
Jacksons I've heard are usually more mellow (dunno about the price. Seen some for like 200$ ranging all the way to 500$ for cool morphs like FL chams blue ish jackson) and the horns are cool. Probably less to worry about if you can't keep them 90 deg f.
Pygmys are cool cause they're small and require not as much vertical space, and they're just.. unique. Handing not advised. You can make cool little terrariums for them ect. Dunno much about pygmys.
Mellers.. Cool spotty patterns..
Parsons.. $$$$$ leather like skin. did I mention $$$$. In the thousands.