This set is hard to come by still in there original box, there are 9 boxes with around 7 per that still have the original stickers for the around the world, retail 7+ dollars each , there are 10 boxes of the Nature program with 5 to 6 per box retail 7 + each individual book the same for the around the world, i have but 1 box of six for the science program but the same 7 each, these prices are a conservative one , there is over a 1400.00 value here , I have no use for them so I'm going to bless the first person that makes this purchase, you can break it up and make more or sell as a whole, that is up to you.