Bumper repairable?
 

I'm looking to get a new bumper for my car like this one:

07 08 09 10 11 12 13 BMW 328i 335i E92 E93 Rear Bumper Cover M Sport | eBay

Are cracks and damages like that repairable to a shop? I'm going to have to get it repainted white also. Or would it be really costly and not worth it?

A brand new one runs for about $700

That looks repairable but it's not worth it. To properly repair it, you are looking at 600ish including paint.

keep in mind, bodywork/paint is like everything else, you get what you pay for.

Anything is repairable at a bodyshop, the question is how long it will last. If the area doesn't wobble or near heat, the bodyshop guy can simply fill the crack, sand it down and paint it over.

Over the time, the paint near the crack will peel if you don't treat it properly. If you want to go cheap, vinyl wrap it.