How much will it cost in labor to install new bumper cover?

I hit something and it made the left side of my bumper cover fall, and then the following day the other side fell. We popped it back into place temporarily but then when driving home the whole thing finally broke off. I have a 2003 Honda Civic EX so a bumper on EBay isn't expensive I just need to know an estimated labor cost to install it? I live in Houston. Also does anyone know any good collision shops in HTX that won't charge too crazy?

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