I have been following 3D printing for a few years now. 3D printing has been around for several years. When I first started following 3D printing, the printers were extremely expensive ($30K). But I always thought that the 3D printers would become like the laser printers of the past. When the Macintosh first came out and the laser printer followed, they were very expensive. Only the richest clients could afford to buy a laser printer. Nowadays, you can buy a laser printer for a couple of hundred dollars. I thought the 3D printers would follow this trend.