Sorry to burst your bubble and rain on your parade, but.....
Ive been watching this too on and off for a few months. Its about as rigged and fixed as that silly Mexican family car repo show was. Takes all the fun out of it knowing they seed the lockers they win with interesting items so you wont turn the channel. If its not that, then theres the psuedo-drama.
You know the lockers are seeded when 9 out of 10 times they make 11ty billion dollars on each score. Such bullcorn. If anything, stupid shows like this might encourage more locker theft when every two-bit criminal thinks they can also make "a big score...just like on TV maw! And I dont even have to bid!"