The past couple times I've gone to cheapo Wal-Mart for gas ($2.009 with gift card, $2.039 without, for 87 octane). Elsewhere it averages $2.079/gal, unless you're in Westborough where it's $2.179/gal for 87 octane.
On a trip up to Rockport three weeks ago, my friends stopped at a gas station on the turnpike, where it was $2.179 for self-serve. One friend (a fellow Contour owner, non-CEGer) accidently stopped at the full-serve station because it was the only one open and wound up paying $2.379/gal for 87 octane.