In 2000, LEGO released 13 Basic sets across 2 subthemes, all of these sets have been retired. Subthemes for that year included Mosaic and Seasonal. For that year, the total price of all retail sets cost $90, today those sets are valued around $2,430, a growth of 2601%.
Most valuable 2000 LEGO Basic set
3443 LEGO Mosaic $2,183.39
Most owned 2000 Basic set
2250 Advent Calendar
Theme Basic
Year 2000
Pieces 18
Availability Retired
2155 LEGO Water-Plane
promotional
Value $14.08
Annual growth 11.7%
Theme Basic
Year 2000
Pieces 17
Availability Retired
2156 LEGO Racer
promotional
Value $13.00
Annual growth 11.8%
Theme Basic
Year 2000
Pieces 16
Availability Retired
2157 LEGO Speed Boat
promotional
Value $7.81
Annual growth 10.9%
Theme Basic
Year 2000
Pieces 10
Availability Retired
2158 LEGO Copter
promotional
Value $13.52
Annual growth 8.3%
Theme / Subtheme Basic / Seasonal
Year 2000
Pieces 240
Availability Retired
2250 LEGO Advent Calendar
Retail $19.99
Value $28.07
Growth  +40.4%
Annual growth 4.7%
Theme Basic
Year 2000
Pieces 9
Availability Retired
2707 LEGO Glider
promotional
Value $2.12
Annual growth 3.2%
Theme Basic
Year 2000
Pieces 12
Availability Retired
2708 LEGO Aircraft
promotional
Value $2.12
Annual growth 10.7%
Theme Basic
Year 2000
Pieces 8
Availability Retired
2709 LEGO Snowmobile
promotional
Value $2.76
Annual growth 4.2%
Theme Basic
Year 2000
Pieces 8
Availability Retired
2710 LEGO Helicopter
promotional
Value $2.17
Annual growth 3.3%
Theme Basic
Year 2000
Pieces 12
Availability Retired
2722 LEGO Ship
promotional
Value $3.05
Annual growth 4.8%
Theme / Subtheme Basic / Mosaic
Year 2000
Pieces 2,427
Availability Retired
3443 LEGO Mosaic
Retail $29.99
Value $2,183.39
Growth  +7180.4%
Annual growth 16.3%
Theme Basic
Year 2000
Pieces 201
Availability Retired
4122 LEGO Basic Building Set
Retail $19.99
Value $30.54
Growth  +52.8%
Annual growth 1.4%
Theme Basic
Year 2000
Pieces / Minifigs 256 / 1
Availability Retired
4249 LEGO Suitcase Set
Retail $19.99
Value $127.40
Growth  +537.3%
Annual growth 7.8%