You nailed it Mal, Andrew does indeed have to outsource his 3D design and printing to a 3rd party. Add to that his costs to import the parts to the U.K. get them through customs and delivered to his warehouse. Then of course there is the UK VAT at 20% to add to the purchase price. Andrew is fully aware this makes his 3D printed parts expensive but not as expensive as some made in the U.K.