The DYMO label maker is sort of fragile. I'm on my 3rd, and I would have probably gone with a different brand if I didn't have a good supply of the label material. Watch the cartridge installation, jam it in there and you have broken it. The bigger one gives you the ability for special characters, and the keyboard layout is much more intuitive. I imagine when they were designing these, they decided to go with the printer-ink pricing model as for the price, it is really if well thought out. But they get you on the re-fills.
Bill Kepner