I bought a 3D printer from here http://www.coolcomponents.co.uk/catalog/product_info.php?cPath=89&products_id=644
It arrived this afternoon and I assembled it and got it to work, kind of.
The parts come unstuck while being made, which cause them to warp a bit.
Apparently I can fix this by sticking some Scotch Blue Painter's Tape to the machine bed, instead of using the green paint, they supply.
I don't know if I can buy any of this tape in Malvern, England.
The heart was almost 1mm undersize in both axes.
I liked the sound the plastic part makes when I drop it onto the table.