Resumen
In this paper we present an approach for the assessment of raffle risk found in with-raffle savings account, a type of product offered by with-raffle savings societies. This risk can be defined as the possibility of losses due to the commitment to pay prizes above the expected value. It concerns the selling of the product to few investors and the uncertainty in the value paid by them, which is positively related to the prize the savings society must pay. Our results provide a simple valuation formula for practioners involved in this specific industry.