You're looking at no more than $4,500 to $5,000 on trade in for your Prius. Even if you sold it out right your looking at maybe $6,000-$6,500 with 125K on the clock. I can score a used 13 III with 20,700 miles on the clock for $13K. Me, I would wait for two or three years and grab a low mileage used forth gen. The only reason I bought my 2010 III new was Cash for Clunkers where I got $4500 from the Fed and $500 from the state for buying a hybrid. I traded in a Volvo wagon with 370K miles on the speedometer. Next Prius I buy is going to be a low mileage used one.