Apparently Shapeways are introducing a new pricing model for some of their materials
Unfortunately it seems that the cost of some of the stuff on the site will increase considerably especially the physically large but low density models
Brigade models (who some of you may know from their 6/15mm stuff) have posted that a lot of their costs will be going up 4 fold
http://www.brigademodels.co.uk/Blog/2014/10/shafted-by-shapeways/
so if you're looking to get something from them (or a similar vendor) it may be worth doing so before 6th October