LEGO 9251 Big Bulk Set is a Dacta set from 1998 valued at $125 for new and sealed sets, up 426% from an original retail price of $23.75. Annual appreciation has averaged 6.11% since release. Used copies are valued between $27 and $34 depending on condition.
LEGO 9251-1 Big Bulk Set is a Dacta System set released in 1998, containing 576 pieces. It consists of standard 2xN bricks in red, blue, yellow, green, black, and white, including 2x2, 2x3, and 2x4 elements, along with larger 2x6, 2x8, and yellow 2x10 pieces. Developed for the educational Dacta range, the set supplies a classroom-oriented assortment of basic System bricks for general construction tasks.
A new and sealed Big Bulk Set is currently valued at around $125, with annual growth of approximately 6%, which is higher than other System sets. The average used price is $28 for those in good overall condition. Based on current trends, this set could be valued near $132 within the next year.