The offers feature is not friendly and needs to be modified. If I’m buying something and send an offer to the seller and their shop is having a sale or they are offering free shipping those offers should apply as well as what ever offer you send them especially if my cart is well over the amount the seller set their shop at to get free shipping it makes me never want to use the offer service feature at all. If I’m still buying something that was $30+ and their shop says “free shipping when you spend $30 or more” should apply. The offer that’s acceptEd should not overrule that they both should work. Or you need to add a feature in the offers section that also asks the seller “I want free shipping” then they can approve or deny.