Apostrophe S and Plural S

Lot's of Video's and Thoma's the Tank Engines Merchandise

Really?  This lovely message was seen today in a newsagent's window.

Just pluralising something does not need an apostrophe.
Add as many numbers of things as you like, you do not need to apostracise it.

But if something belongs to something then it needs a belonging apostrophe.

Sophie's Choice: The choice belonging to Sophie.
Sophies' Choice: Lots of Sophies making a choice, possibly a cafe?

Thomas the Tank Engine's Track: The track belongs to Thomas
Thomas the Tank Engines Track: Some weird activity that lots of Thomases do when they get together.