cost of fixing a slight crack bumper

hi

everyone

just want to find out how much would it cost to fixed a slight crack in the front bumper and repair together

i hit a wall when i was reversing dont ask me how...i just did it by accident

i dont want to claim insurance cause im only in my 2nd year.

would it be cheaper to buy a new bumper or just get it repair etc??

thanks in advance
(307 model 2004)