I saw some MPs (Lambor, Bumblebee, Streak, Prowl) going for cheap at a shop in In's Point, Yau Ma Tei (Hong Kong).

Prices were 240hkd (approx. 40aud) each.

It was by far cheaper than any other price seen so far for me. Seems too good to be true and the shop keeper said she is selling them on behalf of someone renting part of the shop space.

So question is what are the signs to tell if they are KOs (assuming I can open to check before buying)?

The boxes were still sealed and shrink wrapped. I can see the TakaraTomy label but that means nothing.

Any pointers much appreciated. Thanks!