maybe $30ish. even less if it is from ikea and i was able to track down how much it is originally. you should search on ikea, target, overstock, etc. and see if they have anything similar. if they do, you need to price it lower than it's selling at those places.
ikea does do some solid wood stuff. our $20 chairs are solid pine, albeit crappy grade. we also do have a similar island thingy from ikea that is solid wood, but not butcher block as it's more for storing wine. i got it secondhand from an old boss for like $10.
We used to have the Ikea one. It is solid wood, but the butcher block on this one looks thicker. We sold our Ikea one for $20 at a garage sale. I would expect to get between $20 and $50 on Craig's List.