First post and thinking of purchasing the following used g37. Has sport and premium packages, new all seasons, rear brakes, with 45600 on the dial. Went in and inspected/drove and negotiated the price from 24868 down to 23900 before I walked out.

What is a fair price for this? I live in the north suburbs of Chicago. Im willing to wait longer since Ive read the new models are coming out (next year). Just want to know if this would be a wise purchase at this point. Also, any suggestions are welcome.

2008 Infiniti G37 Journey, $24,868 - Cars.com