Ideas
The Evolution of STEM
from $79
$0.09/pc
Every LEGO Ideas set under $100, tracked across 3 retailers — 1 sets in this selection. We compare each live price to the official LEGO RRP, so you see the real saving.
The cheapest LEGO Ideas under $100 right now is $79. Prices and stock update daily, with full 12-month price history on every set.
Frequently asked questions
What's the cheapest LEGO Ideas under $100?
Right now it's $79. Brickheist compares live prices across retailers and shows the official RRP plus price history, so you can spot a genuine deal.