Agree with HB " Caveat emptor"
All cigars at stores near or on resorts are fakes, and not even very good copies. Even at the large mercado's in Santo Domingo you must be aware of what you are buying, some of the best brands are absolute fakes and made of sweepings and stalks and do not burn well or smoke well.
I can attest to this as I bought some Arturo Fuentes #2's in a large mercado and returned them after smoking one for a refund which was finally given after a large hassle with the store manager. I then bought a box from a street vendor outside Boca Chica knowing they were fakes and found that they burned well and smoked very good, even better than those that were supposed to be authentic.
Caveat emptor.