Should I buy a used S24U in 2025/26?

Hi, I've had my A52s 5G 8/256GB since launch and its getting a bit slow and dies quite quickly.

I've been looking for an upgrade for a while and recently found a used "like-new" S24 ultra 12/256GB for about 615 euro (if I trade in my old phone), which is a pretty good deal (I think). A one-year warranty is included and it is from a reputable local store.

I know i dont really need more storage than 256GB, since i never even ran out with my old one but im a bit worried about the condition of the battery... but it should be ok, right?

Do you guys think its worth it for the money or should i just save up and buy the S25U (which is about double the price)?