I look at it a different way. Having a tip installed is part of the cost of playing pool. Just like table time, lunch, a Quervo or two. It's all part of the overhead. If the occasional cost of a tip bothered me, then I probably shouldn't be playing.
it isn't a cost issue.. it's a consistency issue. constantly scuffing never lets the tip get broken in properly.. I have a 2 year old triangle on my main player it's never been scuffed and I have still got a good 3/16'ths of sidewall left..plays great..and more importantly it plays the same.. everyday