Let's see-$35 for the speakers,$10 for custom cut rings both off of E-Bay,$6 for grills because I didn't know the 3 1/2" didn't
come with them and $100 for the install.I am going to go up to 5 1/2" speakers in the spring with custom enclosers.My installer said that the 4" speakers will fit on 3/4" rings without cutting the tridion althogh the speaker will touch it.