Second hand board are better to buy directly from persons, in stead of a shop. Cheaper I think. If you are looking for a board around 1,59, we have something for you very cheap. If you look for something else, just ask around here at the kiteschools if they know anybody. Normally you should find something. Lycra's here are around the same price as in Europe. Shorts are cheaper. In Cabarete you can find nice ones for around 13 or 14 US$, in Puerto Plata already for 6 or 7 US$.
Good luck and have fun here!