I wouldn't pay for it personally, because I don't think it is anything too exciting and it feels kind of messy. With all of these C4D sigs doing anything solely typographical based in PS has to be baws or else it won't compete.
For a CnC: It is messy, and I don't like the 'motion' blurs around the text because they kind of clash with the reflection. I think it should be either the reflection or the background blurs. Other than that it is not bad, but it's not spectacularly innovative or creative in my opinion.