Home Slickdeals Comcast Xfinity 400 mbps internet for $30 a month (1 year agreement... Slickdeals Comcast Xfinity 400 mbps internet for $30 a month (1 year agreement with automatic payments and paperless billing) for existing users YMMV By ARCOM - 9 May 2021 47 0 SHARE Facebook Twitter Go to the deal page: Comcast Xfinity 400 mbps internet for $30 a month (1 year agreement with automatic payments and paperless billing) for existing users YMMV