Alexvs, when you look at the condition of the Minima you were looking at and that Rocket just posted in comparison to the one in your link, I think personally I’d steer clear of the one you’re looking at.
Maybe that’s just me and I’m a bit anal like that, but I’d never put portafilters on top of the machine unles they were on a silicone matt / gripmat etc. and you can see a lot of scratches on the surfaces of the machine. To me, this would be a bit of a concern as I wouldn’t be happy with those (personally). I’d also wonder if the owner is happy to scratch up the outside of the machine like that, how well it’s been treated in general use / water etc.
It might be perfectly fine and I’m overthinking this, but I’d be more inclined to go for something that eirher looks like new or just go from new completely.
edit Dave got there first. Seems I’m not alone with my concerns