Not necessarily! In a free market, I would expect that the value of tampons after use can depend on who their original owner was.
It also depends on where such a market, which might be viewed as perverse by some communities (so there wouldn’t be a market for such in some areas vs others), can be profitable enough to warrant such a business venture.
Japan confirms that such a market does indeed exist for such oddities, as evident by the avaiability of panties in vending machines, which I’d imagine is low cost enough maintenance wise to allow for profit (versus some extraneous outlet that peddles such products for the sake of maintaining enough cash to operate).
Besides, tampons can be easily recycled regardless. A free-market would an incredible boon for anyone trying to make a buisness out of recycling things. The environmentalists wouldn’t know what hit 'em :D.
ROFL. nice.