If you've got a bin of loose Duplo and want to know what it's worth before you sell, the key thing to understand is simple: it's priced by weight, at a flat rate. Here's how that works in practice.
Why Duplo is sold by weight
Duplo doesn't come with the set-by-set resale market that smaller LEGO does — it's chunky, hard-wearing, and almost always ends up mixed together in one bin. Weighing is the fair, fast way to price that: no sorting, no counting, no identifying which set a piece came from.
What does a typical bin weigh?
It varies, but as a rough guide, a standard storage bin fairly full of Duplo often comes in somewhere around 3–8kg. A big under-bed box can be 10kg or more. The easiest way to know is to weigh yourself holding it, then subtract your own weight.
What you'll get paid
At £3.50 per kilo, a 5kg bin works out to £17.50, and a 10kg box to £35 — with a 1kg minimum to sell. Enter your weight on the homepage for an instant offer, no obligation.