Yeah, other people will chime in as there was a lot of detail going on last year about this but basically at this point you're looking at a very thin number of tickets, with a purchaser base that just wants to go to the game and doesn't care about a specific team i.e. a customer who is not terribly price sensitive. Once the teams are determined, not only does the type of purchaser change a lot, but there will be many thousands of tickets that get added to the secondary market.
From admittedly faulty memory, the Seahawks will have an internal lottery for the right to buy Super Bowl tickets for season ticket holders, this usually happens within a few hours of winning the NFC championship, if not within a day or so maximum... people who win get to pay cash in person with ID at CenturyLink on Tuesday or Wednesday. Emails go out late Sunday or early Monday notifying STH.
Another random comment, with pricing like that, if it holds, you may find that buying a package with airfare and hotel is actually cheaper.
Check other sellers. NFL TicketExchange only allows listings from people who are confirmed to have rights to tickets. Other sellers like StubHub (quite reliable) will allow listings from people who will have tickets but do not have them now. Prices vary a lot as a result. NFL TE right now is like $2600 plus fees which really make it closer to $3000. StubHub prices are all in and include a pregame tailgate party and cheapest is $2350 which is a big savings.
Finally, as always, single tickets are cheaper than anything else, and prices fluctuate a lot.
I think this year actually has the possibility of being one of the cheaper Super Bowl tickets. The host city is not known for being exciting or fun (unlike New Orleans or Miami), there aren't a ton of rich people living in the host city (New York), the AFC teams are either coming from far away (New England) or don't have a huge traveling fan base (Indianapolis), the local fans aren't all that super passionate about football so they are unlikely to be buying tickets just to see a Super Bowl in person, the facility isn't historic (Lambeau), you get the idea.