The MSRP (my price at Lulu) will be X (soft) and X+cost-of-binding (hard)--in other words, a static up-charge or profit after printing costs, before shipping charges; no premium pricing of the hardbound (a bit of rounding, at most).So I want to figure out what profit is an amount which allows me to reduce by a percentage that gives the retailer reasonable profit without stripping me of all ear