As for the cost, according to the wiki:
"Category 5 - 20,000 Points per night
Cash and Points - 10,000 + 125 Per night
19% Tax and $10 resort fee"

The cash price looks like between $200-$400 for the basic room.

For what I understand:
If we want to use the DSU, we will need to call and pay cash or cash+point.
When we book thru priceline or other agents, we still get the diamond benefit such as the lounge.

Assume Hyatt points worth 1.5c, paying cash actually better when the total price is
lower than $300(+tax+resort fee). What would be the low season to get a low cash price?

Thanks!