If this is for "Piecing" seminars - this is pretty pricy. If this is for "Quilting" seminars - it's right in the ballpark, especially if they are bringing in the famous teachers. That said, I don't know if I'd pay that much.
I've gone to Innovations in Tacoma WA several times. That trip: gas, hotels, meals, classes each cost me about $1500 for the 4 days.