It's quiet that time of year.
Prices are similar to those in the US.
It's the tropics, it won't rain for long (usually), unless a storm blows through.
It's very easy to get to the cliffs, route taxi (shared ride) is about $2.50 US each way pp, private taxi <$10 if you negotiate. Many of us split visits between the two, there is a much different vibe. With 10 days, you could do 6 on the beach and 4 on the cliffs.