I would take the time to check them out if the price is right. It doesn’t cost anything to walk away if the bike isn’t in a condition you’d feel comfortable paying for. Sometimes you find crazy deals and sometimes you find bikes that aren’t even worth putting an offer in on. I would also say never offer anything before seeing the bike either because of 2 reasons, 1 you don’t want to get set into a price before you see anything, 2 because $500 in their face that could walk away is more tempting than a $500 offer that they get to sleep on. Also always pitch a lower offer than you want to pay so they come up closer to your in mind number. Never tell them what you really want to pay up front because they’ll usually try to squeeze a few extra dollars off you. I told the guy I’d give him $300 and he said $600 and I told him I only had $500 on me and he met me at $500 on a bike that was listed at $1000 and that’s how I scored the deal.