So, someone offered me a Galaxy S3 for PhP18,500(455USD). He accepts Cash or Trade in but the trade in value would be PhP21,000(517USD). I asked how much would I add if I would trade in my Galaxy S2. He said I will add PhP8,000(197USD). I really like the S3 but I don't want to give up my S2 for it. But really, it's a great offer since PhP18,500 is already a cheap price for the S3 here in the Philippines. So, is it really worth the upgrade?