yeah, i was kind of wondering the same thing my self...working my way thru school means having no money, so i frequently buy this crappy beef for 1.99 a pound, because its cheap, protein laden meat. i toss it in the forman grill, and supposedly it takes a lot of the fat away, but i dont know...i bet it still keeps a lot of it. if it is lean beef you are buying, you have no problem to begin with.
i also buy ground turkey quite a bit. it is much lower in fat, and just a little more expensive, (and in my opinion tastes better). giant eagle had a weekend special selling ground turkey for 1.99 a pound...you can bet i bought 4.5 pounds of that stuff...