So Coke had a similar auction thing and I quickly realized that the top prizes could be nabbed for cheap because it would take people forever to collect enough ringpulls and mail them in so they could bid on things. So my friends and I cleared the entire CITY of Coca-Cola. Every grocery store. Pallets of it.
This was just one de-ringpulling session of about 800 cans here:
This is what happened next though... (spoiler: I didn't get my merch)