Ministry of Pinball is a great pinball supplier - I think it's the most used online pinball store in Europe. I guess stuff will take a week or so to get to the States from the Netherlands, but it is a long way.
I just bought a ColorDMD from them and it arrived in a couple of days to England so orders are dispatched promptly.
And you have to love the name. Nothing like getting a big parcel from the Ministry of Pinball...