Sounds perfect for me, because I don't have my own studio and have to attend a local college to have studio access. This way, I can use some of my own glazes in addition to the minimal glaze choices at the college, without having to buy and find ways to store large quantities of raw materials. Perfect, of course, as long as this service is as exacting and reliable as I would be myself. I haven't had the courage to try this out yet.
Anyone here use them, or know someone who does?