The sad thing is, most of us who used to pass on STs to trusted friends of trusted friends did it for altruistic reasons. Or at least not for profit. Somebody who may not previously have had many chances to watch the Albion got to do so, their bum filled a seat, they maybe bought a programme...
If the ticket exchange isn't open for the Arsenal match, hard to see what match it will be open for, other than maybe the coming amongst us of the Living God Ronaldo