I had these little guys, so cute, but I do have some warnings to give about them. I don't want to highjack your thread, but if it's ok for me to share my experience I think it would make the buyers more responsible.
1) Need a LOT of dung, mine mowed through what I thought was a huge load in maybe 2 days! Almost any dung is ok, large mammals are preferred, (such as pigs, horses, etc..) but you can use rodent and many other types as substitute.
2) CAN FLY!!! I lost my first male not knowing they could fly XD Luckily I found him two blocks down!
Otherwise great pets, very cool to watch. Just make sure you have a good supply of dung first