Currently on the east coast regular gasoline is $216.00RD per gallon. Hasn't been 187 in a very long time.
Regular is currently 210.20 as was just posted.
For the op:
Gasoline prices are set on Fridays and the new price is posted at the pump on Saturday. There is no price competition in the DR.
That having been said, pay in pesos and avoid the risk of cloning/fraud.
Many, not all, credit card companies will block usage in countries like the DR..........because of rampant fraud issues. If you intend to use one in the DR, best to let your credit card company know in advance.........so you do not end up with an unwanted block.
God luck with your trip...........and if you are renting a vehicle, there are a whole host of do's and don'ts that members can chime in on.
Respectfully,
Playacaribe2