How much could you sell your year old G-Shock for?

The resale value of a one-year-old G-Shock can vary significantly based on the model, condition, and market demand. Typically, you might expect to sell it for 50-70% of its original retail price if it's in good condition. Limited edition or highly sought-after models could command higher prices. Checking online marketplaces can give you a better idea of the current going rate for similar watches.