Have a look here - it's possible to do it really really cheaply:
http://stardot.org.uk/forums/viewtopic.php?p=96422#p96422
Ask on that thread if you have any questions!
d.
you say you have a Master, so all you have to do is load the rom image into SWRAM on every power-onbut I don't have a EPROM burner/reader.