My advice
1)Do not buy from street vendors
2)Candido Bido and Guillo Perez works are subject to forgeries and are hard to legitimize, unless you buy directly from the artist.Many of these known Dominican artists are over-exposed. If you don't believe me, go to the rotunda park at the end of Sarasota Avenue, right across from La Cadena supermarket and you could buy art created by these artists. These works are presented by the vendor in the ground, exposed to insects and dust. Yet, they would ask you for U.S.$2000 for a piece of junk.
3)Try to buy art from an emerging young artist with credentials, rather than the old guard. The old guard never got anywhere, except DR and even here their works are so commonplace that hardly anyone would pay high prices for them. Jaime Colson is the only artist with international recognition from the old guard, and he was never outstanding in his school and style(Picasso, Leger,Braque), but quality wise he was up there, so his prices could be a bargain.
4)I strongly recommend Carmen Rita Arte Actual, at Avenida Sarasota #20 almost corner Abraham Lincoln, first floor gallery at the Torre Empresarial. This gallery is internationally connected with an entourage of young Dominican avant-garde artists with big potential and with post-modernist styles to match world trends. These are not flamboyan tree, dove and birds, sugar cane field hut and Dominican peasant scene painters. These artists are creative and innovative and their art is excellent for contemporary as well as classic decorative styles. Carmen Rita, the owner, is a well-connected socialite with state-of-the-art international research offices and an impeccable reputation. At very least, ask for her advice.
5)I can also sell you works of art from my art group. However, my painters are Dominican born, but their art is not per se "Dominican art". We specialize in very avant-garde international styles(Minimal, Abstract Expressionism, Conceptual and Post-Modernism). Our pieces are large and expensive. Smaller ones are at least 48". Most are 60" works. Unless you are in the market for very sophisticated pieces, this is not for you. Check my page<Grullon.com> so you can see what I mean.
TW