However, they shipped me the wrong items, but they allowed me to keep it because they did not want to pay the shipping cost to return it to them; I cannot use these because they are 1:400 scale and my airport collection is 1:200 scale. 

I can send you a copy of my communications with the vendor to show that I am the original owner, but- I never opened these boxes. Selling for $23 each.

These are priced to sell, I found this item at higher price of $29 each at this link: https://www.jetcollector.com/push-back-tug-set-of-4-eva-hello-kitty-pink-blank-jcwings-jc4gse002-1400.htm; sorry this link no longer works -