I haven't been to a sales presentation in a long while. Back when Hilton points were worth something I went to one where I felt I could get about $250 in value. The last one I went to was at the Westin in Avon. It was quick, no lies, and the SPG points they offered were easily redeemed for almost $400. More recently I tried to get an upgrade on a vacation deal with Hyatt where they offered 3 nights at the WOR for $95. Unfortunately they didn't have dates that worked, but a 1 bedroom for 4 nights would have represented a savings of over $500 on owner rates (and some obscene amount on public rates). That, I would have done for the cash savings since I'm taking the kid there anyway. I also considered -- and pulled out the calculator app for -- an offer at the Westin Nanea Villas while I was visiting a few weeks back. They offered a 2 bedroom for 5 nights for $1200 to return within a year for a 90 minute show. I passed on that one.
But, by and large, I agree with Talent. My time is valuable on a trip, so I tend not to consider a presentation unless there's some outsized value proposition.
Edit: And dayooper has the right idea. The offers at the resorts have become really weak, but they will pester you with calls for days if you don't tell them to cut it out or unplug the phones.