Currently use very cheap clippers, a lot less than $50, IIRC it was like £7. They take AA batteries. Not sure how long they will last for but probably cheapest as far as £/shave out of the options listed as its cheap enough that it shouldn’t have to last too long to be better than all the other options so far.

Problem with the more expensive rechargeable ones is that the lithium batteries will eventually die and lithium batteries + charging circuitry adds a fair bit of cost to every device they go in compared to AA batteries that I can buy 1 charger for and use between multiple devices. Downside with the AA trimmer, the rest of it is cheap shit quality and there are no other choices available that I have been able to find. I would probably be fairly happy to buy a slightly better one that used AA batteries.

Looked up the corded ones, apparently they just run 230v directly, which sounds spicy next to water but oh well. Was expecting them to be like 5-12v and then an amusing option could be sticking some AAs together - getting one of those special electrical sockets put into the bathroom isn’t a cost I want to bother with.