Raise has recently improved their buying process by showing a timer for how long your purchases will last in your cart. This has been extremely helpful. In the past your cart items would expire without warning but now you can see how long you have to check out before they disappear. It still puts pressure on you to shop quickly or lose your item but it's better than in the past.
“Purchases will disappear from your cart before you can buy”
I have used this site and the deals are great...when they work which is about half the time. If you place an order in your cart, it disappears spontaneously, especially when they offer discount codes, making it impossible to purchase more than one thing without it getting bought out from under you. It's ridiculous that they don't hold it until you can check out. Online chat help was nonexistent.