I can only speak for myself, but I just evaluate what I see when I watch kids play and if I get a chance to see a skills workout. I factor in age if a kid is old (a few years ago we had a kid who was going to be 19 years, nine months old when he graduated HS) or young for his grade.
I do not take offers into consideration and here's why: I don't have the desire, nor the time, to look up the offers of all of the kids we are considering for the Rivals150. Fortunately I have access to programs where I can watch game video of kids that I have not seen in person. Other game video I get from HS or AAU coaches. I just do the best I can when evaluating kids. I'm not always right but I can sleep well at night because I know I approached each evaluation with the same mindset.
I hate that there is a perception among some, not anyone on this message board that I've noticed, that if a kid isn't in the Rivals150 that kid isn't any good. There are plenty of Division I prospects that have very good college careers who were not ranked.