Rolex Day-Date prices start at $36,500 for a 36mm version and $40,100 for a 40mm version when purchased brand new from an authorized dealer at retail prices. However, the retail prices of a Day-Date, also known as a Rolex President watch, can quickly increase from there depending on the case and bracelet materials, as well as the use of diamonds. What’s more, prices of pre-owned Rolex Day-Date watches vary wildly on the secondary market with factors such as age, condition, style, and mat...