We use Chanel Advisor for adding items onto eBay and Amazon, this marketplace is a huge part of our business and Channel Advisor is a really quick and easy way for us to add and adjust existing product on the web platform.
Trustworthy, well known and easy to use - we have been using this for a couple of months now and have never come across any issues. The support we have received has always been good.
Amendments are applied in no time at all and this is great for any quick last minute changes if ever required! I find the image upload process is also effortless.