The Alps Printers are well worth the price tag, Also If you only use them for Decals, it should last for years as it will not be used for everyday printing.
Kodak do a printer similar to the Alps called the Firstcheck :
http://www.kpgraphics.com/firstcheck/ but the price is very very high.
The printing of white is what is important as ZoomZoomMX-5 said.