I am a dealer and have some leftover stock in your size, depending upon your budget.
In general, you want a continious rocker of about 2-2.5", rounded ends, on fin on each end, with good bindings. Most beginners want very loose bindings. You actually need tigher, supportive bindings. I suggest a multi-size lace up to get going. Once you get a bit better, go with some really supportive bindings.
As for pricing - about $150 is the bargain basement. $300 is the going rate. $500 will be a premium beginner board.
rider@boarditup.com