I got mine from sparkfun but now I am looking at some of the other clones around as my project grows. What started as a " hey, can you hook a copier up to one of these?" has now grown to maybe wireless and or ethernet and perhaps voice and proximity sensors.
It started as such an innocent and simple looking project to hook a copier or printer up to an adruino. Now I am in over my eyeballs and not looking back. 