IMO it's not bad for an EX.
141,000 miles --> lets say the car is 8 years old --> around 17,625 miles per year. Not bad either.
Just make sure the hit is not bad and no major repair/maintenance is due.
You can buy a new bumper and have it painted for pretty cheap now.

Also, please check again, i didn't do any thorough research on the market price for my opinion above.

good luck