"Good" condition is kind of a scary term when we talk about GT steering wheels. If there's any scrunch of the leather at all above the horizontal spokes, any hint of sticky, or any other blemishes it's no longer in "good condition". It's in normal condition.
That being said, if it is in actual good shape - $100 - $120 In fair to normal shape - $60 - $100 depending on shape. In fair to poor shape (poor is super sticky, leather scrunches all over, separation on the spokes form the material on the wheel itself) - $20 - $60 depending on shape.
im talking, no scuffs, scratches or tares on the leather, material in fixed position with grip being firm and not "loose and squishy" at all. and the overall color still there and not faded or rubbed away.