How much is LEGO Arin's Battle Mech worth?
Set 71804-1 · 104 pieces
$13.44
new / sealed
$8.74
used
-16%
vs $15.99 RRP
$0.13
per piece
LEGO Arin's Battle Mech (71804-1) is worth about $13.44 new (or $8.74 used) at current secondary-market prices, currently 16% below its $15.99 retail price.
Value history
Value historytracking since Jul 24, 2026
Currently $13.44 new. We just started tracking this set’s value. The chart fills in as prices are re-checked over the coming weeks.
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