No, No, Ben! You are right: We don't estimate contractor costs. I, like you, am a DYI guy. If Danny is, he'll need the bit, inserts and weather-proof screws, and sweat-equity.
I don't know if you, Ben, have experience with Wedding Cake steps. I've had my set for 10 years and put them in and take them out every year--and have learned a lot over that time!.