The best you can do is to shop for used gear. Your money will buy better gear. For $500 new, it's all entry level stuff. If you want pro gear, look used and/or save up some more$$.
These are on clearance right now in Guitar Center stores for 349.00. You will have to call the store direct for the pricing but it a lot of combo for what you pay. I just picked up the 1x15 and am very surprised and pleased.