I’ve been selling on eBay for about 10 years and dealt with dozens of Chinese sellers including many who sell on Aliexpress.
There are literally 10’s of tools that are able to list products from Aliexpress to eBay, but nothing is 100% fully automated.
I do like the way Priceyak does it if I have to name one tool. It won’t do 100% of the job, but it’s better than others I’ve seen.
What you should really focus on
As an eBay seller I would advice taking a look at more eBay listing tools that will help you grow your eBay business.
As a seller you can grow sales in several ways, some of which are more important than the ability to list from another site, for example:
CRM solution to cut down time spent on support by 60%
Keyword tool to choose the highest converting keywords for your listing
eBay template tool to create professional listing that sell much better
Hope this helps.
P.S if you find this helpful, kindly hire me and pay me :-)
thanks