Cheap DHA Source?

I just finished off my first bottle of Flameout, taking six or seven caps a day and I noticed that I felt better all around than when I was on a cheaper omega 3 oil supp. While higher quality ingredients may have played a role, I think I can mainly attribute the improvement to Flameout more than doubling my DHA intake over the generic supp.(550 mg per cap vs. only 250)

Until I scrape together enough to get another 2 or three bottles of Flameout, does anyone know of a cheap DHA source for the interim?

Check your PMs.