I assume there is a finite amount of THC that an oil or fat (I use coconut oil) can hold. I don't know if multiple infusions will stack, or if a weak input will mean lower output regardless of what the substance can hold. I probably have a pound of AVB or so. I haven't made anything for at l ast a year, and I go through about an ounce per month. I'm on a t break right now mostly because I have spent my excess funds on vacations, so budget wise I've got to get solvent again. Inadvertently, it keeps me from spending too much of weed. If I lived in a legal state it would be half what I pay, and I've got a good plug at $100 for a half. Usually quality is solid, but sometimes it's a bit weak.