eBay pain solved! Sellers like us can be reluctant to list on eBay because of the time it takes to post a product - it's cumbersome.
I found a solution but it has risks if you're not careful. Wowlister (created by the guys at Joelister) is - last I checked - free to use. It takes any Amazon listing and puts the item for sale on your eBay account. (I can imagine a bunch of bottom-feeders are going to use it for that whole sleazy eBay and Amazon scheme.)
Here's how to use Wowlister ethically: If you have an item you want to sell on eBay AND the same item is in the Amazon catalog, use Wowlister to instantly put it up for sale on your eBay account. Then edit your eBay title and description so it's different from the Amazon listing (you don't want to infringe on anyone's copyright).
Also note that Wowlister will also duplicate the Amazon product photo(s) in the eBay description and photo section. So ensure you replace them with your own photos in your eBay listing.
Again, this isn't perfect but it does at least 1/3 of the work out for you. I receive NO compensation by referring you to Wowlister.
P.S. If you no of other FAST tools that you used and recommend, comment below!