I reverse image searched, and I didn't see it posted here or at GPONA, so here it is. Check out what was sold last April.
Auction Palm Beach 2014
Reserve NO RESERVE
Status Sold
Price $6,930.00
Lot 606
Year 2004
Make PONTIAC
Model GRAND PRIX
Style DAYTONA 500 PACE CAR
Auction Palm Beach 2014
Reserve NO RESERVE
Status Sold
Price $19,250.00
Lot 735
Year 1998
Make PONTIAC
Model GRAND PRIX G8
Style CUSTOM 2 DOOR COUPE
The 1998 G8 is a bit out of my price range at $19k+, but the pace car went for only $7k and believed to have ~350 miles on it. It was sold at the same event five years previous for $15k. That same year, the 1998 G8 sold for $36k+ and the G-Force sold for $16.5k.
Depending on how Barrett-Jackson works, I'm hoping one of these years to be able to attend and snag the G-Force, or the autocross Grand Prix, if it ever resurfaces.