I'm more tempted to try building my own. Just need to buy an extruder unit (can get one direct from Velleman), open up the extruder hole to 3mm, and add a large drill bit in a tube, to feed the pellets in. All of this can be driven through the K8200's printer board, and therefore through Repetier. Means that the cost is kept down to about £100. I just havn't really had time to get around to actually doing it.