If you’re an Amazon Prime Member, they’ve got a $5 saving on pre-orders for certain upcoming AAA games. This will be applied at checkout and with all Amazon orders, if it drops in price before launch (by way of them price matching other retailers), you’ll get it for the cheapest price with their pre-order guarantee. This will apply to as many games as you want to pre-order. It’s worth noting that Amazon don’t charge you before an item ships as well.