I go through between 1/3 to 1/2lb of organ a day. I can get beef liver locally, but anything else besides heart (which is muscle) is iffy. Probly about 1/2 of their daily organ intake is the ground beef organ blend, the rest...sometimes I'll toss in poultry gizzerds, beef liver (bought locally), or what ever else I can get (sometimes I can get poultry organs local, but I have to be carefull giving those to Arty). So the 1lb package of of ground beef organ blend lasts a minimum of 2 days (if thats all I do for organ and Apollo's in a growth spurt) to 6 days if I supplement with other stuff. Not the cheapest way to do things, but organs are the one thing I'm struggling with locally (though some things her prices are better than my local price, her turkey wings and drums for example).
My suggestion: If you can get organs local, cheaper, then fill out the box with odd stuff that you can't get locally, say goat bones, or the like (though I'll note that the 2lb package of chicken feet doesn't take up much freezer room, you could do several pounds of chicken feet and stash 'em).