Some of us have the gift to haggle, some don't. So what are your best deals you've gotten away with. This could be new or used, forget PP.
Thinking back I've had a few worth mentioning:
Nov 2009 - last year of Saturn. Remember, this is a no-haggle operation. 2009 Saturn Aura XE with both the comfort and convenience packages. Sticker was $24K and change, after rebates, I paid $17K on the nose before tt&l.
July 2013, CPO 2011 Optima LX with convenience package. 32K miles. Asking $$17.5, paid $15K before tt&l.
Dec 2014, 2013 Suzuki Kizashi S 6MT with 16K. $9500. IIRC the dealer was asking $11K.
Now my Accord, 2017 sticker was $26,300, paid $22,900 before tt&l