How Fast is Xfinity Internet?

I have been thinking about getting Xfinity internet and maybe the phone and TV bundle. Right now we pay about $75 a month for our phone and internet at about 7 mbps. Still just doing plain old TV lol. I did a quick search around Xfinity's website but couldn't find what speed they offered at what price, all I found was a starting price or bundle prices. Any help here (please have a source) about speed vs price would be great! Thanks!