Ebay/amazon paint supplier?

Summit has some decent ones.
The Summit brand paints I've used before with pretty good results, I believe a lot of it is Kirker.
They also sell House of Kolor stuff.
As well as Evercoat primers and Spraymax stuff.
I've also used this website as well: Auto Body Tools & Body Shop Supplies | Auto Body Toolmart
For autobody tools and equipment I just go to my local Autobody Paint store.