It would depend on what soils you would be working with. In a more clay soil, they wont wear near as fast as a sandy soil. A rocky soil will have wear, but not near the wear of the sandy soil. For example, with my box blade, i just replaced the teeth yesterday. i used my box blade mainly to dig up horse arenas, move loose clay dirt, and grade the driveway. What put the most wear on it was the sand which almost acts like sand paper constantly and continually wearing down on the tooth. My box blade had teeth welded on which i removed with the grinder and pounded off. Replacing them was a hassle so i drilled a hole in each shank so I could bolt on the teeth for future replacement ease. With the tooth bar you are looking at, I cant see how you could replace the teeth without welding on new teeth unless you converted it to the box blade tooth and bolted the teeth on.