I have been trying to purchase two items from two different sellers....both read the puchase offer by the tell take green check mark? One seller responded that they dont get on the site much and then raised the price? The other just keeps reading the offer intent to putchase and then lets it expire? Tried to contact OfferUp customer service but they wont do anything about it or remove the fraudulent sellers? User's recommendation: Do no use Offer Up site.