[H] TF2 Keys, 100+ [W] $1.85 each (minimum purchase = 5 keys)
[H] CS:GO Keys, 100+ [W] $1.95 each (vanilla) $2.05 each for the 'colored' keys in my bp (minimum purchase = 4 keys)
These keys are tradeable right now, no need to wait a week like when you buy from the store/market. An easy way to save a bit of money if you will be loading your wallet and spending money on steam anyway, or to trade in the trade window with those that have tradeable games currently.
To see how much these are selling for on the marketplace check the links. Keep in mind you will receive 15% less than this amount when you sell the keys in the marketplace due to steam fees.
TF2 keys: http://steamcommunit...upply Crate Key
CS:GO keys: http://steamcommunit.../CS:GO Case Key
Amazon Gift Card. can buy it here: http://www.amazon.co...duct/B004LLIKVU