I agree with not being able to delete skus, because sometimes people need to delete stuff and not being able to delete ANYTHING out of ShippingEasy is really frustrating. Espically if you do email marketing and a customer asked to have all there information deleted out of our system and we are unable to fill that customers request, that is one of the many reason we switched to a different customer marketing program.
We personally have not had any problem with Amazon products, when we first started ShippingEasy, we obviously had all our products synced into ShippingEasy and the SKUs came over correct from Amazon to ShippingEasy exactly how they were in Amazon. We sell on Amazon, eBay and our own website and have had no problem with products syncing. However, I do believe the inventory system needs ALOT of work to be half as good as I heard many out there to be. The only thing that works fantastic is the shipping program to print out labels.
I am very glad that we havent jumped into selling on Walmart yet, because we will be soon. I have asked ShippingEasy if Walmart worked well with their inventory program and they told me yes! Can you please go into more detail about how ShippingEasy doesnt work with Walmart, because that will be a huge problem for us.
Overall, I truly think that ShippingEasy is much better than our old inventory program Agiliron. If you are going to end up finding somewhere else to go, I personally do not have any recommendations because all our experiences have been bad with inventory managment programs. Just DO NOT go to a program named Agiliron.