Although conceptually simple, ROMI and CLTV raise complex issues. First, any given marketing effort can have complex and contrary effects on CLTV and ROMI. For example, a graphically rich Web site design might delight first-time visitors but frustrate repeat buyers. (This increases customer conversion but decreases retention.) Or decreasing the prices on key products might increase conversion and repeat buying (increasing ROMI) but reduce gross margins (reducing ROMI). In developing a marketing plan, Steinberg is considering the multifaceted impact of various marketing tactics on the key parameters of the LCTV and ROMI models.