This thing will cost around 15% of your materials budget (raisers & treads only) which is roughly the cost of two raisers and two treads. It's a great tool and very very useful if installing wood stairs however it is overpriced. Would be a much better price point around $75, max. If you are a DIYer that has a little time before starting a stair project then consider making one and saving some cash. I have a kitchen remodel underway and decided to add replacing carpeted stairs into the kitchen to the list so this was a last minute purchase otherwise I would leave have built my own and saved 85 or so dollars. I do have it for two more sets of carpeted stairs that need to be converted to wood though, so it will come in handy once again.