Stop in for a cup of coffee

last time I bought 87, it was 2.899
Really need to use 89 minimum, that's going for around 2.99 here.
Get the right station in NJ and Shell 89 was 2.699, and the wrong one and it was 2.99 cash early this month.
E0 91 in upstate NY was 3.199 where I bought it the day before.
https://www.gasbuddy.com/GasPrices/Pennsylvania/Philadelphia