Congrats on your new bike.
The bike looks spotless and well taken care of. I would pay $ 2,500 for a bike like that with low mileage before paying less for a bike not well taken care of and more mileage.
Just remember that when buying cars, bikes, trucks, whatever, as soon as you lay down the cash you will find another identical vehicle for less. Always seems to happen. Just ignore it and enjoy what you have.
In as far as the bike not wanting to lean, I hate to say this but the bike is fine. It's probably the rider and his sense of balance at the moment.

Seriously, only seat time will help build your confidence in your riding skills which will in turn help you " lean " the bike more in turns and trust it wont come out from underneath you.
I think its something common among inexperienced riders. They are gun shy on leaning the bike into a turn and you get that feeling your going to fall over if you lean to far. Time will take care of that feeling just like it cured me of my tendency to not want to lean to far.
You have a nice bike, forget about what you paid and just get out there and practice and enjoy yourself.
Ride safe !!!
Chris