Yup, I walked by a few days ago, as well. The sign said $170J. I agree that the beachfront is getting busy there, especially with the new businesses that have opened (Rasta Ade, etc.) The picnic tables out front were always full.
On the high end, I think paid ~$300J for Red Stripe at most places. You can also get a good deal buying buckets at Drifters.