Bcash will likely be ~nothing, too. There have been airdrops, which have given >5% of BTC value and even went to ~nothing due to network problems etc.. So if you're not going to peel now, bcash etc. don't add much value. For the seller, seller could just peel and sell airdrops to get at least X amount of BTC. So no point to sell for less than X. Of course peeling and airdrop dumping is extra work and carries risks, too.
It's not likely that the seller or the buyer is going to peel this coin. If you believe that Bcash will likely be nothing to, then this coin is already fetching a decent premium.

If peeling value is over paid value, it "makes sense" to peel for instant profit. That ruins the coin, though...
Obviously, but as said that is not likely the case. There are more people that would rather bid on it and not peel it than vice versa. Why would someone in their right mind ruin it for 0.0x profit?

Cause it makes their other Casascius coins more valuable, and they already have an impressive collection.

Buy them all, and start destroying them. Then auction the last 2 in existence.
Insane that these coins can sell for below actual value... I have never witnessed such an irrational market.
These guys are just lucky I don't have the spare coin at the moment.