First up, here is an auction for Sonic 26.
Next, another auction here has Sonic 31 on sale.
To wrap up the comics, here is one for Sonic 24. The one selling all three of these ships worldwide, so don't let being outside of the US bother you here.
Here, we have all 26 eps of SatAM. This dude ships to US and Canada.
Finally, here, we have a book of how to Draw Sonic and company. Unfortunely, this person only ships to the US. :(
Well, there you have it for now, folks...