u/Complex-Usual6004

I bought a clean title automatic 2014 audi a4 premium edition with 72k miles about two years ago. Since then, it has been driven daily with no big issues and has gotten up to 101k miles. At the time of purchasing, I didn’t know anything about S4’s but now I am interested in possibly trading my a4 for an s4 and can throw in some money on top if necessary. What can I expect in this current market? I am looking for an s4 that is 2012 or newer with no more than 110-120k miles. Is this achievable? Any feedback is welcomed