Hi, I'm very lucky in the fact that I have grand parents that travel to America a lot. Some of the stuff can be very cheap compared to England.I have been saving some money so they can do some shopping for me, I would like to expand my very limited photography kit. They need a list of things to look at for me and I don't want to get it wrong with it been a little to far for returns. I have a cannon 40d with a nissin speedlite Di622 and a sigma DC 18-50mm lens. I mainly do portrait photography which I have been told my current lens is o.k for? I would like some thing to use for when I do the odd commerical job. For building photography for example and I would love a fisheye for some fun! Also i would like a ring flash. I don't really know what sort of prices I should be looking at for lease as I am not sure which products I should be looking at. Can any one help me and show me some good starting products and prices. I feel a bit lost when searching the net?!