If a getaway is more than $750, or perhaps more like $500, I am simply not going. That means if there is a Hawaii getaway for $1500 and I want to go, I will use another means to get there. I don't see any weeks on Redweek for under $500 for the qualify of resorts we go to (Marriott, Westin & Sheraton). Owners don't usually want to lose a thousand dollars or more vs. their maintenance fees they pay for the week.
The cost of one of our exchanges is about $1000 for a 2BR. So if any getaway is over that, we would just use exchange instead. I generally see Redweek as a rental method for those that don't already own timeshare. I am sure timeshare owners rent off of Redweek, but if you own timeshare there are probably cheaper ways to get to the same resorts. Though I know there are certainly exceptions.