Got this as a starter cage and im impressed for the price.
Starting with the good points - good size for no more than 3/4 rats. Bargain price (had a little discount on top). Easy to figure out and put together. Bar spacing is small so can be used on young rats. Base can be easily adapted for a decent depth of substrate. Everything can be removed to make it more open planned. Doors are a decent size for access. Pull out draw for easier cleaning.
Now the negatives. The door drops slightly which creates a gap, but a bull clip sorts it out no problem. The top half bows in ever so slightly. The dimensions inside are a little smaller than 80×50 (73×47). The draw has a bit of a gap on the front left and right, so ive had to fill it with aquarium silicone so substrate doesn't escape (can also just be taped shut after every clean instead). You will need some zips ties or something just to make all the joins extra secure as the clips don't seem quite enough in places.
Basically if you don't have a ton of money or space, don't want to spend a fortune on altering a cage, only want a few rats and want something you can just get and use right away, this is absolutely the cage for you. Perfect as a starter or secondary/backup cage.