In 2002, LEGO released 2 Western Cowboys sets, all of these sets have been retired. For that year, the total price of all retail sets cost $130, today those sets are valued around $1,399, a growth of 976%.
Most valuable 2002 LEGO Western Cowboys set
6762 Fort Legoredo $995.58
Highest growth 2002 Western Cowboys set
6764 Sheriff's Lock-Up +1244.68%
2 sets

6762 Fort Legoredo

Theme / Subtheme Western / Cowboys
Year 2002
Pieces / Minifigs 673 / 10
Availability Retired
6762 Western Cowboys Fort Legoredo
Retail $99.99
Value $995.58
Growth  +895.7%
Annual growth 7.6%

6764 Sheriff's Lock-Up

Theme / Subtheme Western / Cowboys
Year 2002
Pieces / Minifigs 171 / 4
Availability Retired
6764 LEGO Western Cowboys Sheriff's Lock-Up
Retail $29.99
Value $403.27
Growth  +1244.7%
Annual growth 7.6%