Second bike or cheap new one?

Folks,

I am looking for a second bike, something that's inexpensive that I can offer to guests, but also one that I could use when my main bike is in repair for example.

I don't want to spend much on it, so I'm looking at a budget of 2500 kr. or less. I saw that bilks has a new one in this budget: https://www.bilka.dk/produkter/puch-old-style-dame-shopper-7-gear-28-2022-sort/100555549/

I was discussing with my girlfriend and she was saying that probably if I get a good second hand one for the same price, it might be better than a new cheap one. However, I wouldn't know which second hand one to look at and I'm still tempted by the new one.

What would r/copenhagen advise?

Tak!