Ex-SD
SD and SC are 2 different worlds in terms of economy, desireability, job markets etc. Compare SD prices to a non-bubble area on the East Coast that is within a 30 minute drive of a major metro (Balt, DC, Philly, NY, Boston) and you will have my attention. Right now you live with the Clampetts.
BTW, in those areas RE taxes are considerably higher. My BIL lives in a house in one of those areas he bought around 400K which is now worth 700K 10+ years later. His taxes are over 20,000 per year and his utility bills average around 800/month. He just paid about $1,000 to get leaves raked off his 1/3 acre property.