Let's try to keep the thread on topic and share some good deals that our members may want to snatch up. We all know there are some questionable posts on CL...and they far outnumber the good deals.
Actually because of the way all in one tanks work there is very little pressure and it looks like a second piece of glass was added to the back on top of the cracked glass so this should be fine and obviously has as the poster is second owner. I have repaired/resealed many tanks, including full tear downs and full rebuilds of everything from 10g tanks to 240 gallon tanks. If you are afraid of a tiny tank leaking then font buy it but talking about something with apparently little to no experience in the area isn't fair to the seller. Anyone with experience fixing or repairing all in ones would be fine with this, obviously with an in person inspection.