PS Just realised you can't get a refund if you didn't buy the cage lol. ie if it was given to you with the hamster. So keep it as a play cage for during cage cleans maybe. It's always tricky to know where to put a hamster when you're doing a cage clean. You can just store the bars nested inside the base somewhere and get it out when you need it.
Just wanted to pass on some tips about cage cleaning too. Pet shops tend to recommend doing it too often. Clean outs are really stressful for hamsters and if you have enough substrate in and spot clean now and then you only need to do a big clean out every 6 to 8 weeks or even longer. Using a litter tray helps keep everything dry too. They will usually use on if you put it in the corner or area they choose as a toilet and put some chinchilla bathing sand in it, then you empty it every 5 days or so and hardly ever need to do a big clean. I used to use this one but any small dish will do. I like this one as it fits in a corner and our hammy used to very neatly pee in the back corner then sit in the front to have a wash.
https://www.amazon.co.uk/d/Houses-Ha...=hamster+potty
To save on the cost of substrate (and so you can afford to put plenty in) you can buy it in bulk. Fitch is very popular on here - it's recycled food grade paper. It's sold in 10kg or 20kg bags. The 20kg works out very cheap and only costs about £4 more than the 10kg. I get the 10kg because I find the other one too big to store in the house. The 10kg one lasted me about 6 months with an 80cm cage and is about the size of a small child's beanbag chair - I stick ours in the corner of the room with a throw over it.
You can only get Fitch online though - either direct from the manufacturer or on Amazon (where it also comes direct from the manufacturer). It does need to be stored indoors though or it can get damp and smelly. It's a bit like Carefresh, but better in my opinion, as cheaper and has no dust.
https://www.fitchrecycling.co.uk/ani...-delivery.html
Diet is the other important thing. They need a good hamster mix. Not all Hamster mixes have good ingredients or enough protein. Harry Hamster is the one recommended by the National Hamster Council for Syrians (called Tiny Friends Harry Hamster). The pieces are a good size, is is sugar-free and has enough protein.