Most people I know use the Pro series that retail at around $100 or so (a few more bucks than a set of Jets, $40 or so). The bells and whistles do add up so some people pay allot for gear.
Another point that has not come up is they are small and easily packed for travel, they are shorter than most other fins.
Another point that has not come up is they are small and easily packed for travel, they are shorter than most other fins.