That's the hard thing, determining "acceptable" without knowing RRP and I suspect not knowing is pushing up prices on eBay a bit (and the fact that it hasn't officially been released at all locations yet). PromoBricks stated a price of 100 euros which converts to $111.62 USD, but today The Brick Fan is reporting Legoland California has this available at The Big Shop for $89.95.
At $89.95, I'd be willing to pay $120-$130 shipped to avoid traveling 4-hours to the nearest Legoland Discovery Center. If it ends up being super rare and hard to get then I may have to sit this one out. Great year to start creating an amusement park, we've got the Fairground People Pack coming out, this set, the Ideas Rocket Ride set, the BrickLink Hot Shot Carnival set, and the only retired set I would consider (but probably don't need) is the Fairground Mixer. By the way, amusement parks and fairgrounds are different! I had to look up the definitions to: carnival, fair, fairground, midway, festival, amusement park, theme park, etc. I'm enlightened.