Codisto works great due to the connection capabilities it holds to both Amazon and eBay Marketplaces! But there needs to be more Manual Work done in order to complete your connection and keep it stable.

The service is good–often great, when not encountering bugs.

Codisto is very powerful, it gives you many options to map your magento product attributes and list based on info in there. you also have lots of filter options to decipher what to list if not all items