don't listen to half the people on here man... no one does their own stuff these days. no point taking it to a pannel beater or buying another one as youre gonna get ripped off either way.
that's an easy fix and you can do it at home for next to nothing.
i bought same style bumper bar off a member on here which was completely ripped in the bottom section, had 3 cracks through it.
(sorry no pics of before)
tools i used,
soldering ion + zipties
bog
primer
paint
firstly, align the cracks to where they ripped. Get someone to hold it in place or simply use duct tape to hold it all together temporarily.
use the soldering ion to melt the cracks and use zipties as a plastic filler, work the plastic in to itself with the soldering ion untill its completely joined together, it should look something like this:
then grab bog, mix it and fill in the uneven surface till it covers everything, sand it and keep repeating till its the right shape...
primer n paint. presto.
i did it matte coz i was gonna respray the whole car like that at the time. unfortunately i smashed and cracked the bar again a few times so ill be doing this myself again soon.
hope this helped