need a shutter

The summer heat is really draining me! The a/c is running most of the time thus making us so nervous on the up coming electric bill, with that we try to stay most of the time in our terrace so at least we can save up a little on our monthly dues while enjoying the nature's fresh clean air specially in the afternoon. But what bothers us are the frequent pass by of our neighbors thus seeing us and everything that we do on our terrace, so I asked my husband to look for a exterior shutters we can put up for a little privacy. I only hope that it's not that expensive, because the husband might flaired up more with the expenses!