Thank you both for your input. I'm still reviewing your comments and the SBR calculator. Clearly a useful too but I wonder how confident they are in the push percentages shown. Does anyone (Anthony?) know how much data is behind it? What years they used to produce those percentages, etc.
Skeeter, I'm with you in your comments except I didn't understand what you meant by the 2.5% you were adding in at the end of your example. To me if the "price is right" at -160 and we buy to -170 on the 10, then we win .6154, we push 3% (in your ex.) and we lose (1 - .6154 - .03) * 1.7 for a net positive result of .01258. If the push percentage is 4%, then the net result is .02958. So clearly, the value of the number we are buying onto is even more important than the fact we are going from 160 to 170. However, we have to make sure we are getting value along the way. That's why accurate push percentages are critical.
If I make a selection at -110, then I have to believe I'll hit at least .5238 to break even. If I'm going to pay -160, then I have to feel that extra 50 cents got me up to .6154. That's 9.16% worth of push percentages I have to capture in my line move of 2.5 points. That's an avg. of 3.66% / pt. Looks to me like I capture that almost anywhere in the spectrum according to SBR. I'm going to continue analyzing this but it seems to me buying points at 10 cents / half point is worthwhile in baskets. I rarely buy from Pinnacle since they overcharge. Sometimes I sell there. In football, I only buy when I'm getting a break on the price on/off the 3 or 7. I think baskets are a different animal with most points having significant value and as you point out, there is even more value the more points you can buy, especially onto numbers with a solid push percentage.