If the F or C buses go that far it’s 30 pesos. They go thru Cofresí so maybe. I’ll check mañana maybe. Or maybe a Luperon carrito or la javilla a/c’d bus pick up at roadside is perhaps 40-50 pesos. A taxi I’d guess 350-1000 pesos depending where in pop, and your ability to blend in & speak Spanish (Dominican price vs tourist price)