- Political & Science
The most expensive item with a signature of Garth Brooks (Garth Brooks Signed Guitar. Lot 89463) so far was sold in April 2015 for $2200.00 while the cheapest item (Hand-Signed Autographed GARTH BROOKS 8X10 Photo - Amazing Country Artist) found a new owner for $0.99 in February 2018. Sold items reached their highest average selling price in September 2008 with $510.00 and the month that saw the lowest prices with $3.25 was October 2010. In average, an autographed item from Garth Brooks is worth $43.95.