So assumption being all Starbucks gift cards on here are illegal? Be clear what you are selling since that is not the case, some are legitimate..
All starbucks cards sold here are not 100% carded cards and I've myself sold a legitimate starbucks gift card and even I sell legitimate Amazon gift cards which have no chance of expiring ever. It's sad to see even senior members selling illegal stuff and there are very less chances of you getting legitimate gift cards in exchange.
As a semi-regular buyer of gift cards on this forum, I have to say that the assumption is
always that these cards may not be legitimate, hence the considerable markdown. It's a risk/reward analysis that buyers have to do. And sellers ought to know that they are therefore in a buyer's market because of the venue we are in.