The difference between a PLUS exchange and a regular exchange is the number of credits that you use. If you choose to do a PLUS exchange, you will be matched to someone else who has at least that many credits to use on an exchange. The theory is that someone who has successfully completed exchanges in the past will continue to do so. Doing a PLUS exchange is not a guarantee of a gift, nor is it a guarantee of a "better" or more expensive gift. The recommended amount to spend is still $20 and the goal is always to send a thoughtful gift.