In 2003, LEGO released 3 Explore Bob the Builder sets, all of these sets have been retired. For that year, the total price of all retail sets cost $15, today those sets are valued around $60, a growth of 301%.
Most valuable 2003 LEGO Explore Bob the Builder set
3286 Spud and Bird $27.09
Largest 2003 LEGO Explore Bob the Builder set
3284 Bob's Busy Day 9 pieces
Most owned 2003 Explore Bob the Builder set
3285 Wendy in the Office
3 sets

3284 Bob's Busy Day

Theme / Subtheme Explore / Bob the Builder
Year 2003
Pieces / Minifigs 9 / 1
Availability Retired
3284 LEGO Bob the Builder Bob's Busy Day
Retail $4.99
Value $18.55
Growth  +271.7%
Annual growth 4.4%

3285 Wendy in the Office

Theme / Subtheme Explore / Bob the Builder
Year 2003
Pieces / Minifigs 9 / 1
Availability Retired
3285 LEGO Bob the Builder Wendy in the Office
Retail $4.99
Value $14.42
Growth  +189.0%
Annual growth 7.7%

3286 Spud and Bird

Theme / Subtheme Explore / Bob the Builder
Year 2003
Pieces / Minifigs 9 / 1
Availability Retired
3286 LEGO Bob the Builder Spud and Bird
Retail $4.99
Value $27.09
Growth  +442.9%
Annual growth 8.0%