AJ Motors Christchurch — Making Trade-Ins Easy We believe car ownership should be stress-free, and that includes selling your old car. At AJ Motors Christchurch, we’ve simplified the trade-in process so you can get a fair offer fast. Online valuation — Fill out our quick online form to get a free estimate Vehicle inspection — Visit our Christchurch dealership for a final assessment. Get an offer — Receive a no-obligation offer based on your car’s condition and market value.