I'm not an MISB collector, everything I buy gets opened unless I intend to sell it on or it's a double of a toy I already have and I've acquired it by accident (which has happened a few times, damned eBay!). I can understand the appeal of MISB'ing to those that do, the toys do look good in their packages and it makes them hold, or even increase, their value comercially. However, many of us 'openers' (for want of a better word) will very often buy an MISB toy and open it as we can usually guarantee the quality of the toy we're getting and that it comes with any accessories or other parts that its supposed to have, that would be a pain to hunt for otherwise (I had an incomplete Jetfire that took me 4 years to complete without spending a fortune, and has such put me off G1 collecting). The rarity of the toy is usually no factor in it being opened, in our eyes, however the MISB collector would then have one less chance to own this toy. Does this mean that someone who bought, say, an MISB G1 Stepper, has an obligation to keep it sealed for future or current buyers or should they be able to enjoy their purchase, guilt free, however they please?