We would like to purchase draw.io plugin for confluence.
Would like to know if we can directly purchase it from Atlassian or we
need to buy it from the vendor itself? We are in the US.
Yes, you can buy it directly from Atlassian. Nevertheless, here is an overview of advantages that you have, if you buy your licenses through us:
But you are free and can also buy directly from Atlassian. It actually has in my humble opinion no relevant upsides, though.
Here you got our price info: https://info.seibert-media.net/display/Atlassian/draw.io+for+Confluence+-+prices+and+costs
And here you got the direct link to the Atlassian Marketplace: