It'll be worthwhile to get those levels, Yip, Tort and Bat RS gold are all excellent familiars however, I'm not aware of any method that is cheap that doesn't require an excessive time of prep time. Abyssal Lurkers (Which requires you to farm abyssal creatures yourself for abyssal charms) and Graahks/Kyatt's is the only truly lucrative and marketable familiars I've heard of that are less than the age of 66.

I'm not searching for the most efficient pouches. I am looking for cheap OSRS gold pouches that can be sold to minimize my losses I have only two mills in my accounts but I'd like 69 summoning and I do plan on using as much charms as I need, as I must.