welcome to bp.net!!
If you just want a normal ive seen males as low as $15 and females for $25 at shows. If you wanna spend $600 you can get a wayyy nicer one. I would reccommend against getting a glass aqaurium if youre concerned maintaining correct temps will be a problem. A nice PVC enclosure from somewhere like Animal Plastics may be a better investment and save you some aggravation. Thats just my opinion. If you have any more q's feel free to ask. Everyone here is more than willing to help