I have found that pricing should be determined according to your audience but should various payment-options should be discussed and developed. Having a broad audience, it would be wise to open with a shorter bill term having a slightly higher rate than that of a longer-term (i.e. monthly vs. annual or annual vs. life-time). With the unsteady economy, each client will have their own perspective as to what may benefit their financial needs/flexibility. As it pertains to a customer preference, remain receptive of your audience.