You were looking at an Exo Terra tank most likely. Its what I have now for my bp and to be honest I wouldn't recommend it for ball pythons unless you dont mind tweaking things up a bit. Glass tanks in general are not recommended because of all those ventilation holes and the giant mesh top, they are absolute HELL for keeping humidity in unless you live in a pretty humid country. For tanks to keep humidity you will have to cover the top mesh with either one of these, fitted plexiglass, plastic wrap or aluminium foil, this is because mesh sucks, it lets out the humidity and heat.
For bp's people would recommend sterile tubs. Just drill in a few holes to control humidity.
Also if you're going for an Under Tank heater (Which is what most people would recommend as it aids in their digestion), its a must that you also get a thermostat to control how hot it gets because they do get over 110f and will burn your snake if they burrow, which they will. And they wont even notice it because they have no pain receptors, theyll let themselves cook.
Another advice when settings things up if you still want to go with a tank. Get Sphagnum moss to put around the tank, damp it down a bit and it'l help with humidity, and also get a substrate like eco earth (coconut) or cypress mulch as they hold humidity a lot better than aspen bedding.
One last advice, dont go for analog hygrometers/thermometers. Go to walmart and get a digital one that measures both, I think its called Acurite or something. Better yet get a temp gun to measure temps, easier more convinient and very accurate.
good luck. Yes Bp's are kinda high maintenance in humidity and temperature lol. And picky eaters sometimes!