This thing is awesome. It makes brush cleaning so much easier and quicker, and I definitely feel like my brushes are getting cleaner than they were before I purchased this! Absolutely worth the price, because keeping nice brushes clean definitely makes them last longer.
I also think this mat itself is way more important than the cleaning product you use. Every brush is different, but I swear by castille soap to clean mine and my blenders. So save some money and get this mat + simple cleansing products, rather than expensive brush cleansers!