Other Any tips on Galaxy S2 front bezel replacement?

My dad has a Galaxy S2 and has some marks on the chrome bezel and I looked at some videos on youtube to replace it but there is none that is for bezel replacement only. Every vid is for screen replacement or the housing replacement (and they also replace the digitizer).
My problem is that these videos show that the screen is glued to the part of which the bezel is also a part of and to remove the bezel and the screen I would need to use a hot air gun. Is that so?

Did anyone of you replace the chrome bezel only?
How much could the Samsung SC charge if they even agree to do it?
I have the full housing including the middle plate
 
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