This article talks about some dangers of finding mobility scooters on secondary markets such as Ebay.
When you find a local power wheelchair seller through Ebay, and you want to visit a local seller, and deal directly, saving on shipping, you may forgo certain buyer and seller protections that Ebay offers normally. On the other hand, a small mobility scooter can easily be transported across the country without excessive shipping fees.Ebay handling most payments through PayPal should provide some level of assurance and security indeed.
However, you need to follow all the Ebay and PayPal rules to get protection that Ebay gives you. Saving money by visiting the buyer directly and not paying for shipping can strip you of some protections Ebay offers.