Reb Beach RBM1BK model
if the babe is REALLY in good conditions, she's worth $550, defenetely.
the RBM has a totally different sound as any other Ibanez, because of the mahogany body, perhaps.
she has a pretty dark and glassy sound, more bottomed, to my ears.
i got an RBM10 that was equipped with a crappy TRS, but i replaced it with a used Lo-Pro, and the babe rocks! and i paid her around $500!!!
the neck is amazing, pretty thin and fast, with smooth frets. she has one of the best action i've ever played!
about the construction... oh... if you know Ibanez standard, you couldn't be wrong!
for $550... don't hesitate! get the deal!! [size=0.5](unless the guy is lying)[/size]