You can buy 1 to 100 plus WFT's whatever suits your business model and add other slida's such as DuoChef as and when you need them. But while you are working on your business plan, we are sorting the nuts and bolts, cutting, shaping and building the new WFT's (walking food trucks). Available will be the multi-purpose reversible (deep & flat side) tray with harness. Also available will be the drinks holder that easily clips to the back of the unit. This will hold 7 x 250ml cans or 6 x 350ml. Add another holder doubles the cans to 14 or 12. Stack holders sit on top allowing another 14 or 12. Thats a load of 28 or 24 cans. Plus in front carry disposable cups or prepared food stuffs like donuts and many other types of prepared foods to distribute & sell. So think fund raising, think events, markets, children's sporting events, think stadiums and more!