I bought a 2012 3.5i CPO in 2015. 28k miles. Original sticker was $61k, so it was optioned somewhere in the middle, has Premium and a few extra bits. Nothing outrageous.

Dealer came down about $1700 from the asking price. The general consensus from the pricing experts here using Manheim auction data and the CPO dealer cost was that it was a fair deal, maybe a few hundred high. It had 4 new runflats and new front pads/rotors. I declined a warranty, but squirreled $3k away for eventual fixes.

The dealer produced the CPO inspection sheet and the complete service history file, with the POs name redacted.

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12 E70 3.5i xDrive
03 E46 330i ZHP
01 E53 3.0i
98 E36 323is
12 Audi A4 Quattro
79 Triumph Spitfire
73 MGB