I don't like southdown or DSBs, so I just went with 3 40lb bags of CaribSea Aragonite Reef Sand and two 20lb bags of AragLive in the display and one of each in the fuge--the fuge will be a DSB.
The sand was 26.99 a bag for both kinds, so you can add that up.
The tank is about half full right now because my RO unit is only 50 gpd--no salt yet. Once I get it full, I will put in the salt and start the pumps. I'm looking for local rock like you did, hopefully I will have some luck. If I have to have it shipped in, I'll just cure it in the tank.