This study ascertains the extent to which consumers achieve highest value-for-money under different conditions. Perfect Information Frontier Approach is applied to examine the influences of providing consumers with information on their purchase decisions, with allowance for the joint effects of prior product knowledge and product involvement on the provided information. A 2 (provided information: simple vs. complex) x 2 (prior product knowledge: novice vs. expert) x 2 (involvement: high vs, low) factorial design was employed. Data from 282 survey respondents illustrate that experts were more likely to be persuaded by complex product information than by simple information, while novices reacted similarly to both simple and complex information. The effects of providing complex information to involved novices and providing simple information to involved experts showed the least impact.