"I had sufficient SPS staked in order to be airdropped the required 300 purchases packs so I did not spend any additional money to be able to buy the packs."

This is terrible logic. You could have sold the vouchers for $$$. Let's say you could have timed the market perfectly and bought 300 vouchers for the minimum price of $15. Or $4,500.

So if instead of buying and opening packs, you had sold your vouchers and held your pack-buying money, you'd have more value in your account, you could go buy all the cards you earned and have ~$1,000 left over.

I know this comes off as a bit aggressive, but the above is a big fallacy in investment. Think of it this way, do you think of the airdropped SPS as infinite ROI since you get it "for free"? Do stock returns give infinite ROI because you already have the stock so any returns are free? Holding all that value in SPS has a cost, even if it doesn't feel like it. So it's easy to fool ourselves into thinking we made better decisions than we did. And hopefully you or others will see this and be better able to account for the true costs of an investment.