Do I sell all my Steam Trading cards and increase the amount of money in my wallet, or do I complete the collection for each game and raise my level in order to increase the likelihood of receiving a booster pack, which contains more cards that I can sell, every week?
Simple. You do the second option, and then send em all over to me, in which I can then also gather booster packs, increase the quantity of the cards, and keep them to myself.