is cheap caribbean actually cheaper than booking direct with the resort and any current coupons or package deals worth grabbing

Looking at a 6 night trip to punta cana or jamaica in early april and the all in pricing on cheap caribbean is noticeably lower than what royalton or excellence quoted me direct. But the catch is always somewhere right. Anyone booked through them recently for an upper tier all inclusive? Curious about whether the room category they actually assign matches what you book, and how the airfare bundling math works compared to booking the flight separate. Also any coupons or limited time codes people have actually applied at checkout.