LEGO Dacta sets that gained the most value
All 24 LEGO Dacta sets whose estimated value new is the highest compared with their original US retail price, out of 24 sets now estimated above it.
| # | Set | Name | Year | Pieces | Retail (USD) | Retail today CPI-U | Value new estimate | vs retail |
|---|---|---|---|---|---|---|---|---|
| 1 | 9020-1 | Soft Starter Set | 1998 | 84 | $235.75 | $454 | $1,750–2,200 | 3.9 to 4.8× |
| 2 | 9376-1 | Castle Set | 1997 | 337 | $63.50 | $124 | $450–560 | 3.6 to 4.5× |
| 3 | 1041-1 | Harbor | 1986 | 77 | $36.50 | $104 | $320–400 | 3.1 to 3.8× |
| 4 | 1014-2 | Mosaic Set - Domestic Animals | 1985 | 80 | $29.15 | $85 | $260–320 | 3.1 to 3.8× |
| 5 | 1000-1 | Mosaic Set | 1985 | 202 | $46.75 | $136 | $390–490 | 2.9 to 3.6× |
| 6 | 9251-1 | Basic Just Bricks | 2000 | 576 | $23.75 | $43 | $110–150 | 2.5 to 3.5× |
| 7 | 9605-1 | 4.5V Technic Resource Set | 1990 | 1,534 | $74.99 | $180 | $430–540 | 2.4 to 3.0× |
| 8 | 1041-2 | Universal Building Set | 1980 | 126 | $36.49 | $139 | $320–400 | 2.3 to 2.9× |
| 9 | 9293-1 | Community Workers | 1996 | 220 | $31.50 | $63 | $140–180 | 2.2 to 2.9× |
| 10 | 9365-1 | Community Vehicles | 1993 | 742 | $69.00 | $150 | $330–410 | 2.2 to 2.7× |
| 11 | 1034-1 | Teachers Resource Set | 1985 | 1,534 | $129.00 | $376 | $760–940 | 2.0 to 2.5× |
| 12 | 9139-1 | Push Train | 1998 | 76 | $76.50 | $147 | $260–330 | 1.8 to 2.2× |
| 13 | 9617-1 | Pneumatics I: Introduction to Air Power Set | 1997 | 98 | $29.99 | $59 | $90–120 | 1.5 to 2.0× |
| 14 | 9725-1 | ROBOLAB Amusement Park Set | 1999 | 248 | $100.00 | $188 | $280–350 | 1.5 to 1.9× |
| 15 | 1075-1 | LEGO People Supplementary Set | 1980 | 256 | $14.50 | $55 | $75–100 | 1.4 to 1.8× |
| 16 | 9203-2 | Tech Machines Set | 2004 | 122 | $104.99 | $174 | $220–280 | 1.3 to 1.6× |
| 17 | 9654-1 | Early Simple Machines II | 1998 | 113 | $92.75 | $178 | $220–280 | 1.2 to 1.6× |
| 18 | 9701-1 | Control Lab Building Set | 1995 | 576 | $149.00 | $307 | $380–480 | 1.2 to 1.6× |
| 19 | 9616-1 | Wheels and Axles Mini Set | 1995 | 83 | $15.00 | $31 | $35–50 | 1.1 to 1.6× |
| 20 | 9665-1 | Mechanical Engineering Set | 2001 | 322 | $150.00 | $266 | $320–400 | 1.2 to 1.5× |
| 21 | 9453-1 | Universal School Set | 1997 | 699 | $73.75 | $144 | $170–220 | 1.2 to 1.5× |
| 22 | 9614-1 | Pulley Set | 1995 | 78 | $15.00 | $31 | $30–40 | 1.0 to 1.3× |
| 23 | 9265-1 | Roof Tiles | 1998 | 250 | $25.25 | $49 | $45–60 | 0.9 to 1.2× |
| 24 | 9610-1 | Gear Set | 1993 | 76 | $12.50 | $27 | $25–35 | 0.9 to 1.3× |
How this list is made
Retail prices are adjusted for US inflation (CPI-U) to today's dollars where the inflation table covers the release year; newer sets are compared with their price as it was. Estimated market values are ranges from marketplace data, for orientation only, and the "vs retail" figure is computed from the ends of the range. Only sets with a US retail price of at least $10 and 50 or more pieces are listed.