I did see those the other day when they are listed and examined them closely. These may be ok if they are just displayed on a shelf and not run on the rails. You can tell that these have never been run after painting as you can see how easily the paint comes of by looking close at the couplings. With the paint coming off so easily there all the wheels sides will easily lose its paint while rubbing the sides of the rails. You can also see that a rattle spray can was used especially on the chassis as the thickness of the paint almost fills in the letters. This is also another case of not taking the chassis apart before painting as you can see inside and the drive gear has a thick coat of dark green. The seller states that they are authentic and durable but my guess is that any child playing with these will be sadly disappointed when the paint starts peeling off.
The seller also states the toy is 'home modified'. Why not put 'custom' in the listing title, for the many who don't read the whole description? Get the idea across quicker? Hmm.
Would be a bit curious as to how to get the paint to not rub off, for the purpose of creating/possibly selling customized engines in the future. I don't see many custom engines on Ebay, wonder why that is?
I bought one of these from that seller, it was a Tomy Trackmaster chassis for the blue track.
My son loves the channel and I have zero skills in model making etc so was delighted to find this guy selling them.
So far it's been very durable, my son at 4 has no idea how to look after his trains and also chucks them around when he is angry, it's survived all that for the last 5 weeks!
Hard to believe but I certainly will take your word for it Asfish since you have one and are not affiliated with the Seller. BTW, welcome to the Community.