Do it. I suspect you could waste R350 on far worse things.
So what if it's not revolutionary? So what if it is not the best new thing since sliced bread? No one has yet said it's kak or buggy or anything, so to me that is already a major plus! So the SP isn't 17 hours. So the MP isn't as creative as some would like. So what? At least it would seem as if they have managed to at least complete the fucking game and not release it with a million bugs and flaws. But, those might yet appear once it goes live officially and many more play online.
At the end of the day, it's only R350 and 5-10 hrs of SP gameplay depending on your ability and probably at least a month or two of MP, makes this a worthwhile investment. It will also make the time to
... go by quicker!