They start at $210 and increase $30 per tier every 9,000 tickets. The last few tickets are at the gate for $360. Those sold out too so there won't be any tickets for sale at the gate.
ETA: In actuality, to fully answer your question, if I recall correctly, they were $210, $240, $280, $320 and finally $360. So not exactly a $30 division. of course, i could be wrong,,,