I'll tell you this, though. A largish can, typically 13-14 oz, of anchovy fillets is MUCH less expensive than those small 1-2 oz. tubes of paste. Make your own, recipes abound and it's a cinch. You can easily make sardine paste too, if you fancy that.
Me? Anchovies? Fillets straight from the can with a cold beer are an excellent snack, so we're on the same page.
/johnny
Oooo. Sardine paste. I must admit I have only recently become enamored of those little fish, but I regret it has taken so long :-)