PT,
If you have experienced this, then I won’t dispute the point.
If not, then with respect, I would question your definition of difference. BTO you pay (money), STO you receive (money). The latter is the crucial difference I think; regardless of its nature, it’s essentially income (would this make the cost of BTO an outcome?)
Damn New Year’s eve, Sir. Get the manual out (then you have a good one, mate).
Grant.