Great video! just wanted to mention R type released in 1987 so the operator would have paid closer to $2500 - $3000+shipping for it. after collecting $8k over 10+ years thats not very good, considering 50% goes to the location and at least 5% to sales tax plus you have parts and repairs to consider
Like most arcade games of that time, R-Type was ported for 16-bit console and computers shortly after it´s initial release, which surely comes into play here.
I also don´t think we can compare the earnings of games of that era with those of the early 80s.