Wouldn't it be a good idea to give people the option to buy their failed prints? At a serious discount. They could still be usefull to users (spare parts, test objects, personal archive, learning from mistakes) for many reasons and it could mean some salvaged revenue for shapeways.
you cold choose to either
A: get the coupon and not recieve the part
B: Get a coupon for half the price -shipping and get the failed part sent to you
C:Remodel & re-order the part, and have the failed part included in the box. you get a coupon for half the failed part, but no shipping is deducted..
Does shapeways sometimes try to print a part twice if it fails?