You can get it by the GALLON at www.chemistrystore.com for $36. That
should be a lifetime supply.

Also available at your better electronic parts places, where you'll get
1/64th of a gallon for 1/5th the gallon price.

Synonyms for the stuff:

Synonyms: Betula oil; Panalgesic; o-hydroxybenzoic acid methyl ester;
betula; gaultheria oil; methyl o-hydroxybenzoate; oil of wintergreen;
sweet birch oil; teaberry oil; wintergreen oil; analgit; exagien;
flucarmit; 2-(methoxycarbonyl)phenol; anthrapole nd;
2-carbomethoxyphenol; Methyl hydroxybenzoate; Linsal; Metsal Liniment
!