Used Lego sets - Keeping the box or not?

work4fbi2 · 2014-07-29T07:58:23.000Z

Do you guys keep every box from every set you open to build? How important is the box if you want to sell a used Lego set? Does it really upgrade the value? I mean do you prefer to buy a used set with or without the box? I bought a few used sets because it seemed like a good deal. Boxes included (castle and viking sets (the biggest boxes indeed ;p). They take so many storage space! Perhaps after building them once I would like to sell them again. Therefore my question. Tnx