Dota 2 Compendium - Buy from Dota 2 store or Steam Market?

I'm not sure if you buy it in market, the seller name might appear on the compendium

Buy it from the store. You'll throw another 2,5$ towards goals, which means more free stuff for us all as compendium buyers.

buy it from the market.
if u won't someone else who will buy the compendium from store will be buying it from market. so nothing will change.
you must always do what is best for you and the group. if nothing will change whatever u do in group u must do what is best for u.
:)

Well, I decided and bought from the store. Most of the market prices were above $10, and the ones below were only slightly under.