Keep in mind the $1 minimum Ziftr advertises for its store when it opens up has a limit. When the market price of coins is less than $1 you will only be able to pay 5% of the purchase price with coins, the rest will be regular money. So if the store opens and the going price of ziftrcoins is still less than $1 and you want to buy something for $100 in the ziftr store you will only be able to use 5 ziftr coins to get a $5 discount and will still pay $95 for the item. If the market value goes above $1 (which may or may not happen) then you can buy items with 100% coins. The way I see it, the $1 minimum value sounds good but in practice may not actually work out in the open market.