In 1985, LEGO released 31 Basic sets across 2 subthemes, all of these sets have been retired. Subthemes for that year included Supplementaries and Universal Building Set. For that year, the total price of all retail sets cost $375, today those sets are valued around $3,313.
Most valuable 1985 LEGO Basic set
550 Basic Building Set $361.54
Highest growth 1985 Basic set
1965 Building Set Trial Size Offer +8233.33%
Largest 1985 LEGO Basic set
540 Basic Building Set 626 pieces
Most owned 1985 Basic set
720 Basic Building Set
31 sets

293-2 Basic Building Set

Theme Basic
Year 1985
Availability Retired
293-2 LEGO Basic Building Set
Retail $7.00

304 Basic Building Set

Theme Basic
Year 1985
Pieces 31
Availability Retired
304 LEGO Basic Building Set
Retail $2.00
Value $15.31
Growth  +665.5%
Annual growth 3.7%

308-2 Basic Building Set

Theme Basic
Year 1985
Pieces 30
Availability Retired
308-2 LEGO Basic Building Set
Retail $3.00
Value $29.53
Growth  +884.3%
Annual growth 5.7%

310-4 Basic Building Set

Theme Basic
Year 1985
Pieces 46
Availability Retired
310-4 LEGO Basic Building Set
Retail $5.00
Value $29.52
Growth  +490.4%
Annual growth 2.8%

320 Basic Building Set

Theme Basic
Year 1985
Pieces / Minifigs 77 / 1
Availability Retired
320 LEGO Basic Building Set
Retail $7.97
Value $42.50
Growth  +433.2%
Annual growth 4.0%

330 Basic Building Set

Theme Basic
Year 1985
Pieces / Minifigs 156 / 2
Availability Retired
330 LEGO Basic Building Set
Retail $9.95
Value $118.66
Growth  +1092.6%
Annual growth 6.2%

340 Basic Building Set

Theme Basic
Year 1985
Pieces / Minifigs 214 / 2
Availability Retired
340 LEGO Basic Building Set
Retail $2.95
Value $76.43
Growth  +2490.8%
Annual growth 8.3%

350-2 Basic Building Set

Theme Basic
Year 1985
Pieces / Minifigs 311 / 4
Availability Retired
350-2 LEGO Basic Building Set
Retail $14.95
Value $323.57
Growth  +2064.3%
Annual growth 8.9%

504 Basic Building Set

Theme Basic
Year 1985
Pieces 41
Availability Retired
504 LEGO Basic Building Set
Retail $3.95
Value $58.90
Growth  +1391.1%
Annual growth 6.4%

508 Basic Building Set

Theme Basic
Year 1985
Pieces 66
Availability Retired
508 LEGO Basic Building Set
Retail $4.95
Value $19.74
Growth  +298.8%
Annual growth 2.3%

510 Basic Building Set

Theme Basic
Year 1985
Pieces 106
Availability Retired
510 LEGO Basic Building Set
Retail $3.50
Value $63.40
Growth  +1711.4%
Annual growth 6.7%

520 Basic Building Set

Theme Basic
Year 1985
Pieces / Minifigs 165 / 1
Availability Retired
520 LEGO Basic Building Set
Retail $12.95
Value $48.57
Growth  +275.1%
Annual growth 3.3%

530 Basic Building Set

Theme Basic
Year 1985
Pieces / Minifigs 269 / 2
Availability Retired
530 LEGO Basic Building Set
Retail $14.95
Value $112.71
Growth  +653.9%
Annual growth 3.9%

540 Basic Building Set

Theme Basic
Year 1985
Pieces / Minifigs 626 / 2
Availability Retired
540 LEGO Basic Building Set
Retail $19.95
Value $96.76
Growth  +385.0%
Annual growth 3.3%

550 Basic Building Set

Theme Basic
Year 1985
Pieces / Minifigs 569 / 2
Availability Retired
550 LEGO Basic Building Set
Retail $42.00
Value $361.54
Growth  +760.8%
Annual growth 5.1%

720 Basic Building Set

Theme Basic
Year 1985
Pieces / Minifigs 334 / 1
Availability Retired
720 LEGO Basic Building Set
Retail $25.00
Value $253.59
Growth  +914.4%
Annual growth 5.4%

730-2 Basic Building Set

Theme Basic
Year 1985
Pieces / Minifigs 429 / 2
Availability Retired
730-2 LEGO Basic Building Set
Retail $30.00
Value $123.27
Growth  +310.9%
Annual growth 3.5%

740 Basic Building Set

Theme Basic
Year 1985
Pieces 516
Availability Retired
740 LEGO Basic Building Set
Retail $60.00
Value $298.67
Growth  +397.8%
Annual growth 4.0%

810 Basic Motor Set

Theme / Subtheme Basic / Supplementaries
Year 1985
Pieces 34
Availability Retired
810 LEGO Basic Motor Set
Retail $26.50
Value $58.98
Growth  +122.6%
Annual growth 1.9%

895 Wind-Up Motor

Theme / Subtheme Basic / Supplementaries
Year 1985
Pieces 10
Availability Retired
895 LEGO Wind-Up Motor
Retail $9.49
Value $15.10
Growth  +59.1%
Annual growth 2.2%

1512-2 Basic Set with Storage Case

Theme / Subtheme Basic / Universal Building Set
Year 1985
Pieces / Minifigs 99 / 1
Availability Retired
1512-2 LEGO Basic Set with Storage Case
Retail $18.00
Value $103.22
Growth  +473.4%
Annual growth 4.4%

1520 Basic Building Set with Storage Case

Theme Basic
Year 1985
Pieces / Minifigs 210 / 1
Availability Retired
1520 LEGO Basic Building Set with Storage Case
Retail $16.49
Value $206.89
Growth  +1154.6%
Annual growth 6.4%

1546 Aircraft

Theme Basic
Year 1985
Pieces / Minifigs 26 / 1
Availability Retired
1546 LEGO Aircraft
promotional
Value $100.82
Annual growth 10.4%

1548-2 Helicopter

Theme Basic
Year 1985
Pieces 36
Availability Retired
1548-2 LEGO Helicopter
promotional
Value $167.63
Annual growth 5.5%

1551 Duck

Theme Basic
Year 1985
Pieces 6
Availability Retired
1551 LEGO Duck
Retail $0.40
Value $5.00
Growth  +1150.0%
Annual growth 8.7%

1560-3 Basic Building Set

Theme / Subtheme Basic / Universal Building Set
Year 1985
Pieces 27
Availability Retired
1560-3 LEGO Basic Building Set
promotional
Value $15.73
Annual growth 4.4%

1562-2 Basic Building Set

Theme Basic
Year 1985
Pieces 32
Availability Retired
1562-2 LEGO Basic Building Set
Retail $4.00
Value $10.17
Growth  +154.3%
Annual growth 2.3%

1960-2 Special Value Set

Theme / Subtheme Basic / Universal Building Set
Year 1985
Pieces / Minifigs 96 / 1
Availability Retired
1960-2 LEGO Special Value Set
Retail $12.00
Value $181.15
Growth  +1409.6%
Annual growth 10.1%

1962 Basic Building Set

Theme Basic
Year 1985
Pieces / Minifigs 211 / 1
Availability Retired
1962 LEGO Basic Building Set
Retail $15.00
Value $225.29
Growth  +1401.9%
Annual growth 6.8%

1964 Basic Building Set

Theme Basic
Year 1985
Pieces 27
Availability Retired
1964 LEGO Basic Building Set
Retail $1.49
Value $25.00
Growth  +1577.9%
Annual growth 7.1%

1965 Building Set Trial Size Offer

Theme Basic
Year 1985
Pieces / Minifigs 32 / 1
Availability Retired
1965 LEGO Building Set Trial Size Offer
Retail $1.50
Value $125.00
Growth  +8233.3%
Annual growth 14.0%