In 2002, LEGO released 3 Western sets across 2 subthemes, all of these sets have been retired. Subthemes for that year included Cowboys and Indians. For that year, the total price of all retail sets cost $200, today those sets are valued around $1,778, a growth of 789%.
Most valuable 2002 LEGO Western set
6762 Fort Legoredo $777.70
Highest growth 2002 Western set
6764 Sheriff's Lock-Up +1633.64%
3 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 $777.70
Growth  +677.8%
Annual growth 7.2%

6763 Rapid River Village

Theme / Subtheme Western / Indians
Year 2002
Pieces / Minifigs 343 / 7
Availability Retired
6763 LEGO Western Indians Rapid River Village
Retail $69.99
Value $480.07
Growth  +585.9%
Annual growth 4.9%

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 $519.92
Growth  +1633.6%
Annual growth 8.4%