I commented earlier on this post about it being impossible for a bot to do search on Google. Turns out I turned to the same resource you're recommending.
I'd also recommend sending a python bot to your favorite news sites once a day for updates instead. Same deal, Beautiful Soup.
On the other hand, Google has Custom Search, which is $100 a year for 20k queries. I use that as well.
It looks like Google is shutting down the paid version of Custom Search Engine:
"On April 1st, 2017, Google will discontinue the sales of Google Site Search, the paid version of Custom Search Engine. All new purchases and renewals must take place before this date. This product will be completely shut down by April 1st, 2018." Source: https://cse.google.com/cse/