Upload & Sell: Off
98.7% feedback on ebay indicates higher than average dissatisfaction rate compared to other power sellers. Most trusted power sellers have feeback %age of 99.5 or above.
Obviously you are never going to have perfect rating when you sell so many items, there are bound to be a few unhappy customers once in a while. However if you actually read the feedback, most complaints are either about the item sent not matching the item promised, or about the orders getting canceled without explanation etc. I would be cautious when buying such a high priced item from a seller like that.