This review is based on its default built. There is actually an alternative with instructions available in the lego app.

I bought it with a discounted price, $125 HK Dollars. Consider the building experience it was great, though a few building steps were not very clearly illustrated in the manual. After all, the manual lacks 3D perspective.

I let my 5-yr old daughter to do the easy part. As a technic item, there are many "pushing connectors into the right hole" procedures, and the real challenge is to assemble more 5 or more connectors into one long beams, while holding partially constructed beams in position at the same time.

This Monster Jam, once built, extends one's joy as a piece of durable toy. It could withstand falls and collisions. Upon playing, the weakest part is not the 'ear' but the small circular piece at the rear: https://brickset.com/parts/design-2723 .

Another point to note is that, it takes a longer distance than expected to fully wind up the rear wheels. Could consider grabbing the green one as well within the sub-series if you have more than one kid!

Lastly for the stickers. They are slightly 'whiter' than the body of this Monster, so I 'd give a 70/100.