A loose barrel isn't an issue if it's tight when the action is closed with the forend removed, if it's loose locked up without the forend, it needs to be shimmed. See forend fit in the FAQs to fix the loose when broke open issue. But I wouldn't spend $90 on a used one unless it was like new, brand spanking new Pardners sell for $120 here, on sale for $100 a couple times a year at the local chain store.
Tim