It wouldnt really be considered bulk, but you could get quite a few pouches of Five Brothers on that budget. Doesnt get a whole lot higher in nicotine than that. Some of the Cornell and Diehl Burley blends might fit the bill and can be purchased in bulk, something like Old Joe Krantz or some Gentleman Callers. Hearth and Home Steamroller might also be a nice choice. I have heard that it is supposed to emulate Five Brothers though, and I have a couple of ounces of it but I havent had the chance to try it yet.