Soooo there’s a 2010 mkz for sale

Its listed price is 3k but I haggled a bit and got it down to 2300, idk if I should buy it though. Transmission has not been replaced ever, the motor was replaced a year ago. It has 230k miles on the dash. I know the transmission on these cars after a while goes to crap so I was wondering if it would be worth it to buy it and replace the trans or find something else