I would pass you can find adult breeder pastel males for about $100. And the other is probably just a normal which you can find from 20 to 50. And if you are planning on building a collection of bps then stay away from tanks. Go for a rack with tubs. Much easier to maintain the heat and humidity. I started out with tanks and cages. I now use all the tanks for overflow rats. Which I'm about to build a rack for them as well and get rid of the tanks.