[NEEDS INPUT] [GF] [CL] CelebuSerum Has No Price on Flea Market

I think the CelebuSerums are like the reward potions in that they're not meant to be sold. Sometime I see them being sold by one of my Sims that I'm not playing or even by an NPC, but trying to sell them with an active Sim has never worked. It's like selling them from a Sim's inventory: they have 0 value.