Koetjeboe, this is exactly right on how to buy and sell. It isn't as easy as it sounds. I have been struggling to get better at the doing part.

You also wrote earlier about losing a post. I have had that happen too. Also, some others have grumbled about the same experience. It is disappointing to spend a lot of time to write something for all of us to think about, then it vanishes. One poster some time back suggested writing your post in word, then copy and paste. If that disappears, you still have a copy in word to try again. Writing something simple like this may not warrant it, but some well thought out posts are definately worth taking a more careful and sure approach.