There is no way my sig se kit is going to end up costing more than the arf version that sig has. The kit costs 75.00. The arf is 200.00. That is the biggest difference in price between a kit and the same arf that I have seen. I've assembled 3 arfs and have many of the tools needed for a kit build. I bought a damaged hollow core door at home depot for 12.00 and two rolls of monokote which is 20.00 more. So far that is my only expense. This is my first kit and I'm surprised at how easy this thing is going together.