I think our era is really the first one to get the buy it and keep it in the box thing really down. How many of you ever kept SW figures from the 70's and 80's either in box or in anything near mint. Back in the 80's there was this kid in my school who bought two of every SW figure he had one for playing and one for packing in a box for the future. Back then we though he was mad, now almost 30 years later he's the one with every SW figure mint in box and 99% of every Matchbox car ever made mint in box. Along with this and other similar collections he did while we went through school and college they are now housed in a purpose build extension at his house, that he built a few years ago.
What I'm saying now is all those in Mint boxed Takas that fetch good money, will not be surpassed by Yammies in 20 years as everyone is well aware of the Mint in box potential of nearly everything nowadays. Still they wont be cheap as chips but your not gonna lose money on em.