A small number of people will have a blood pressure at very high levels, above 240/120mmHg for example, and this can cause problems very quickly and it needs to be treated straight away. For a blood pressure chart of readings, click here.
Materials and installation for a stone retaining wall start around $25-$40 a square face foot and go up depending on materials, site conditions, and other factors. It costs $1,250-$2,000 or more for a wall 30 inches high and 20 feet long.
FauxPanels.com sells 20'x20 faux brick fence posts (with cap and anchoring system) for $800-$1,200 each. MiamiStoneInstallers.com describes how stone posts are built, and a company representative estimates it costs $450 each ($1,800 total) for four 7' brick pillars 16x16 or 20x20 wide. DIY installation of a brick fence post might cost $200-$500 and take a weekend or two of hard work.