YANBU
They do not sell a single cage in store that is suitable for hamsters. What they call their "large wire hamster cage" is only about half the minimum recommended size of 80x50cm unbroken floorspace
That same cage is supplied with a wheel so small (14.5cm diameter) that the poor hamster (especially Syrians) has to bend its back and neck to run in it. That causes painful spinal problems, to the point that the hamster learns to stop using the wheel and so can't get anywhere near enough exercise. Want to upgrade the wheel to one that's the recommended 28cm diameter (dinner plate sized) for a Syrian? You can't. They've made the cage too short and it won't fit.
They will sell you all manner of expensive pretty wooden chews. What they don't tell you is that many hamsters ignore wood, and the thing to offer is Whimzee dog chews. But they can make more profit on wooden chews. Hamsters need to chew to wear down teeth that constantly grow. If they won't chew wood, you end up with a hamster that starves to death when its teeth get too long.
Meanwhile, you could get an excellent Alaska cage from Zooplus.co.uk for only £30 - their prices are a rip off. I've attached a comparison between a suitable cage and a Pets at Home one that I found online
There are many, many reports of hamsters either being missexed (in some cases resulting in unwanted pregnancies) and dying a short period of time after coming home - one friend and experienced hamster owner who should have known better than to buy from PAH recently had one die after about 3 weeks. It's because they come from rodent farms - the hamster equivalent of puppy farms.
Pets at Home are absolutely awful and I will cheer on the day they go bust.