For comparisons sake, here in Costa del Sol Spain:
In june this year I paid for 700 kwh a total of 77 euros - this is equivalent to 3388 RD$ at an exchange rate of 44 pesos to 1 euro.
Bryanell would have paid 3895 RD$
With the contract cost of 10.44 and equipment hire of 1.14 euros (plus IVA[VAT]) the cost for 2 months usage of 710 kwh was a total of 91.86 euros.
If Bryanell's figures exclude all the overheads then the cost looks something like 15% more in the DR than in Spain.
Graham