Without going into a whole littany right now, because I am very tired, the most important numbers are odd (7, 9, 11) due to all of the one run games which exist (nearly 1/3 of all games end in 1 run). The value of each number, and consequently the cost to buy off of and onto each one is specific to that number. There are many other exogenous factors as well. I know several people who have spent years upon years compiling db's detailing the value of each number (with a home dog, total at x, fave of -40 to -60) etc. I would be doing them (and myself) a disservice by posting this on a public board. I will be called a dick from every which angle, but I refuse to post this publically because it can only hurt me in the long run. There were years when BM's charged 10c to buy off a 3 in foots. Those days are over because of how much information was made known. Do some of your own research, spend time, ask the right questions to the right people and you will certainly pick up a few things. The food chain is really long. You are will certainly find good info on this and other boards when you wade through the shit, but to the type of info you seek, presented in the right way is the result of lots of work which I cant take credit for, nor can I dispel. Good luck.