From a purely marketing standpoint these "collector tin" kits are pure genius!
Take a tired old model kit whose tooling was paid for eons ago, add a few cheap to produce "new" pieces like posters, decals, maybe a handful of odds and ends parts... put it all in a "collectible" tin box that probably costs pennies a piece to manufacture, crank up the MSRP by 50% or more... and the people will line up to buy them.
Genius! And it seems to be working. I have to hand it to the manufacturers who are offering these... uh... "collectible" kits. It's probably the single smartest business move they've made in years.
P.T. Barnum is smiling...