OMG- A few suggestions for you
Our airfare from Wichita last year was around $1000 round trip (total price for two tickets). Air fare is up this year as I am waiting to book my flights for our trip in December (YEA!). Right now the price seems to be running around $550 to $575 per ticket (less taxes). I would highly recommend doing your own research and then inform your TA that they are full of crap with the prices they are quoting you by giving her printed copies of what you can find on line. If she cant find a comparable rate, fire her and get a new agent.
I just heard on our local new that studies have shown the best time to purchase air fare is on Tuesday's at 3:00 pm- not sure if there is any truth to that but it may be something to look into.
Good luck with your search and enjoy your anniversary in paradise!