... and to add insult to injury: I am trying to send in 41309 Andrea's Musical Duet, but when I create my SKU name it says it cannot be created because I already have an SKU with that name. Going to my full inventory, I see no SKU with that name, or for 41309 at all ("Manage my Inventory" screen, all options set to "Include All") ....
Also, there are a ton of LEGO items that do not show up in the "Add a Product" screen when searching for "LEGO <set number>" (or they show all sorts of alternate listings, but not the main product listing). I have to go by ASIN to add. Even had one where the ASIN works in regular Amazon, but Add a Product does not show results for the same ASIN. Luckily I could use the "Sell on Amazon" button on the regular Amazon product page to add it to my Shipping Plan, but wow, what a crappy system.