The Marketing Scales website is a gold mine of information. It is the only source that helps me understand the psychometric quality of the instruments used in past research. I recommend that researchers bookmark this site . . . they will be back!
Low Price Guarantee Focus (Information)
This four item, seven-point Likert-type scale is intended to measure what a customer focuses on after a store pays him/her a refund as part of its low price guarantee (LPG). Specifically, the scale measures the degree to which a customer focuses on the "information" function of a LPG, such that the LPG is a signal to consumers about the location of a retailer's price point among those in the market.