In my experience having the POP removed affects value a lot. I'd say up to 50%. Some collectors don't mind as the moc will still display and it is obviously worse if there pop removal has left an actual hole.
This POP removal is not horrendous and the card and bubble look very good so that will help keep value.
That being said, I wouldn't pay more than 30-35 quid for this moc. Others may disagree but that's the max i'd pay.