Very interesting that u post this because I also got tired of using used bones. My dad went to a butcher shop and told the butcher to cut up a bunch of beef bones for me....the ones with a lot of marrow. And it lasts for weeks. I suggest you try it.
So far I feel its replenishing my body. When I took a collagen supplement I felt like it was too much at one time for my body. The soups though are really making a difference :)
I suggest u purchase those bones and cook them for atleast six hours every day before u drink.