I have to buy a new toner and probe every couple of months (Eventually I'll buy a more sturdy one, but I can't beat being able to use 3 or 4 at a job site), but i use http://amazon.com/gp/product/B008G8KE90?psc=1&redirect=true&ref_=oh_aui_search_detailpage

as far as the butt set i've only ever had to buy replacement alligator clips. http://amazon.com/gp/product/B008HNU0FM?psc=1&redirect=true&ref_=oh_aui_search_detailpage