Recently, I've been doing a lot of selling and buying on Ebay; mostly buying Batman figures and selling off stuff I've had stored away for years. I've noticed that it doesn't matter if the figure is in or out of the box. If the desired figure is rare and you can get it at a decent price, why not buy it if it's a loose item.
Today, the Batman Unlimited Deathstroke figure is selling for $50 on average, MIB. The loose figures are selling for almost the same. As long as they have all the accessories, they are still desirable to collectors. I was lucky to get one for $25.
Point being, the action figure doesn't need to be "in the box" to be valuable. So why not take them out, display them on the shelf. They look much better that way I think.
Let me know your thoughts.
Thanks
Stephen