GameGuru - I think we are just out of luck on availability of new PowerMac G4's.
I know both MacConnection and Amazon have not had any remaining stock for several weeks now of the last G4 model, the 1.25 GHz dual boot.
There is a photo of the 1.25 GHz MDD on the Daystar Technology website http://www.daystartechnology.com/. Click on it and it routes you to a page with note to call their Customer Service group for more information.
I suggest you give Daystar sales a call and see if they are able to assist on a new G4.😉
Man.. I went and looked at the powermax site. I have no idea how they get these prices for the old machines... 1400 for an old single 1.25??? You can get a new 17" imac for that much.