They have a specific buy back program and I expect that your quote was 80cents on your purchase price from years ago. When they take your week and put it in their Hawaii Trust they will sell it for at least $24,000 - $45,000 depending on what view it was.
Current offers I've read are more on the line of 25 cents on the dollar of original sales price. Our Suite's unit was originally $14,900. Current offers that I've read about, including mine, were $4,000 or 26.8 cents on the original purchase price dollar. The Villa's offer price of $5,000 works out to about the same amount. We have owned our units for 9 and 10 years. The $14,900 was a roll back price when they sold pre-construction Skyview units at Polo Towers. The price was "rolled back" to the "original" sales price when PT's started selling units.
If they were offering 80 cents on the dollar I would be almost everyone would be jumping off the bandwagon and selling their units. Price is going to depend on location, desirablity and current inventory. If they need the inventory and are having trouble obtaining it other ways (E-bay, Redweek et....), then prices will be higher. If resale units are abundant, if they have plenty of developer inventory already or in area's that sales are sluggish, then offers are going to be lower or, there won't be an offer at all.