I’m seeing 4 packs for sale online. FT: SARA, Alvarado, RR, Cellarmaker, North Park, Ghost Town, Henhouse... Also have ElSegundo- Power Plant HH- Big Chicken Heretic- Evil3 Pretty flexible on this. ISO 1-4 cans. Could expand. Could also do a proxy situation with thank you beers. If you’ve got a fresh spare can reach out.
Not saying your offer isn't fair or not. Yes, 4-packs are for sale online, but the minimum order is $65 at Tree House. Someone can't just buy a 4-pack. They have to reach that amount as a part of the order in getting this 4-pack. Maybe that is where your expansion could come in. Good luck.
