Quoted from StupidJackpot:Not that this should be the sole deciding factor in your decision, but remember that if you want to buy your pin NIB, Medieval Madness is being discontinued. You should be able to buy Monster Bash for the next few years, so if you move to a place that can house more pins and you keep adding to your collection, you will be able to pick it up down the road.
This is totally false. MMR is not being discontinued. They will stop the line in the short term, but it will always be produced in between games. Heck, when they release the new updated screen, buyers will be lining up.