Get Amazon Prime. For me, it is easily worth it. $70 to $80 a year and you get "free" 2 day shipping on a ton of stuff. Plus access to a bunch of movies and TV shows to stream as well as "free" monthly kindle books to rent.
For me, it would be like three months and I'd easily exceed $80 in shipping.
Running low on tooth paste? I order off Amazon, 2 days later its at my doorsteps for "free" (shipping).