Its better that you first check the market which lenses are available; first not all the lenses are available in local markets and second these are not cheap :-#
Find the "How to do Macro" thread; there are other techniques and options like Reversing the lens, using Close-Up Lens Filter or Extension Tubes etc. I posted Phottix' results in my 600D thread; this brand's Close-Up filters are available from an online Pakistani vendor.