I've noticed the eBay listings from different sellers with the same items and pictures with different prices.
My suspicion has always been that these are used items for sale in a Japanese shop and the various sellers are trying to market them to overseas customers.
I've noticed it with instruments, audio gear, etc.
So it's worth considering you're probably not dealing with a retailer or even the original owner familiar with the condition of the product and there's little recourse if something goes wrong. The post a bit further up really points out the pitfalls of buying a used amp from overseas. I also think it's a big risk. I would rather wait for the gear to show up domestically.