Hello and welcome

Is it the barred PAH Habitat 3? It's a decent size but has very bad access (tiny doors) so I can understand why you can't get on with it

The Bucatstate 2 is an excellent enclosure, if it's the 100cm one and not the 80cm one!
When it arrives, and you have it all set up and him moved over, you could try requesting a refund for the original cage. Some people have done this saying it's not suitable - even if it's been used. However if it's the large 95cm one they may not accept a refund.
I've added a link to suitable cages and enclosures below in case you wanted to look at others as well, but the Bucatstate is a great choice
Here is a list of suitable cages available for hamsters in 2025. Whether you prefer tank style or barred cages, front access or top access, there is, thankfully, plenty of choice in the Uk and Europe. Choice in the US is mainly tanks and tank style or diy. Both tank style and barred cages...
www.thehamsterforum.com