It is probably reasonable for the season. The problem is that everyone wants to go now, so there is not as much availability. Disney can ask for and receive what it wants. You really need to decide if you are comfortable paying this. If you could wait and go in late August and upgrade to an AP for the AP rate, the rate would drop by about $100/nt. Make sure that you figure in the nightly resort fee and 15% tax on the $279 and resort fee. If you are comfortable spending it, go for it. Otherwise, stick with DI&S.