HeadCount, organizers of the Participation Row charity booths at the “Fare Thee Well” Grateful Dead concerts, has revealed that they raised over $750,000 in total revenue for the 17 participating charities.

The biggest item up for auction was a guitar, played by Bob Weir for the song “Row Jimmy” in Santa Clara, CA, and signed by all seven members of the “Fare Thee Well” band. The winning bidder of the Weir guitar spent $526,000 on the item, even though the initial bidding started at $5,000.

You can read more about the HeadCount Participation Row here, including all 17 charities that profited from this wonderful auction.