Spenders/rankers with excess units do this regularly.
And remember, values are 100% subjective. If someone feels their Monica is worth 90 or 10, that's their deal. If it's not worth 90 to you, you don't buy it. If it's worth 10 to you, you buy it. If they offer you 10 and you value it higher, politely decline. If the berate you, then you get confrontational - or not - your call.
Units that are unneeded by high volume players are routinely auctioned off daily. This is a primary reason why values seem to fall - because the units are readily available and there's a smaller and smaller demand. Rankers and spenders fuel the market with bargain prices on units. You should probably thank them.