LEGO DC super heroes 76013 batman: Joker steam roller - see comments

This was fully built, but when my son died last year, the plane broke down, and all the bits were placed in a sealed bag. For some reason, the Roller survived and is built (but can be broken down for rebuilding). It has two instructions, one for each bit, and its box, which is rather tatty. As it was a display piece, the roller, in particular, may be missing a few pieces. See the photo; it has lost all its figures. The Amazon price for a complete new set is £120, so it is being sold just below one-third to reflect the above facts. The Joker’s steam roller features a chunky roller, flickable laughing gas bombs and a big smile! Batwing features 4 flick missiles, an opening cockpit and flying/attack-mode sweeping wings. Engage the Batwing’s attack mode and capture the bad guys. Fit the flag into the gun and give the superheroes a surprise that The Joker would love! Go on a silly steamroller rampage. Batwing measures over 3” (10cm) high, 11” (28cm) long and 7” (19cm) wide. Steam roller measures over 5” (13cm) high, 7” (20cm) long and 6” (16cm) wide. S hold contain 486 LEGO pieces. Ages 7-14.