are hamsters expensive to own/maintain?

so if i didn’t badly want a hamster already, after joining this sub i definitely do 🥺 i wanted to ask if they are very expensive to upkeep; for example, how often do you guys take your hammys to the vet & do they require vaccinations / neutering or spaying? what do your monthly costs come to at the end? i’ve bookmarked lots of helpful posts about cages, wheels, and toys. i’m super determined to give the best life possible to the little guy or gal who ends up having me as their mum :D