Trying to book the cheapest private jet flight possible? That sounds like a great idea.
You won't find me flying on any low end Part 135 operators. There is a really scummy, corner-cutting, bottom-feeding segment of the charter market.
Professionally flown Part 91 corporate jets are statistically just as safe as airlines. Top-tier charter and fractional operators run great operations. Anything else and you are really rolling the dice.