Occasionally buyers back out of a sale and the item needs to be relisted.
I used to collect iPods (long story ) and sellers used to sell the items on eBay for 5-10x the market price in the hopes of selling at least one to a poorly informed/new collector.
I assume the same thing is happening here. Bitcoin is gaining a lot of traction and mainstream adoption so it would be reasonable to suggest that more people are searching on sites like eBay for coins. It looks like the seller is just trying to take advantage of the price and turn a big profit considering you could buy close to 3 or 4 of those on here for that price.
But if you relist it, does it show as "sold"? There is an option to search either for "Completed Listings," which would show unsold products, and "Sold Listings," which I assumed meant it actually sold. But who knows because eBay is pretty stupid generally speaking.