Yea the promo airdrop cards in Splinterlands are always hot sellers. Take Dr. Blight from Chaos Legion. I have not checked him recently but three days after his airdrop he was trading just north of $100. And if you just hold a unopened packs in your inventory to get airdrop points for their SPS token which is their governance token. So not only can you get a sick card from buying a certain amount of packs. Then you are airdropped more tokens just by holding packs. It really is a win all around.