I use Swansonvitamins.com for most supplements.
They recently added their own store-brand Omega 3 Fish Oil —
1000 mg/180 EPA/120 DHA at $4.99 for 150 softgels.
Occasionally, they run a buy-1-get-1-free.
They also offer a variety of related products.
http://www.swansonvitamins.com/swanson-premium-lemon-flavor-omega-3-fish-oil-150-sgels
Unless you order them or go to GNC you cannot do OTC on this product.
And I can't take the other types, and it has to be magnesium that is not oxide bound.