How much was 500 pounds in 1800 worth?

If you go here

http://www.jasna.org/persuasions/printed/number12/heldman.htm

it tells you what the pound was worth in 1810 to 1988 which was about 33 dollars

then if you go to

http://data.bls.gov/cgi-bin/cpicalc.pl its an inflation calculator you find out that 33 dollars is roughly 60 dollars today.

so if you times that by 500

it is worth

about 30000.