Looks like water damage on the bottom 4 inches or so. The pics you supplied don't give enough details for us to determine its value. Control panel shape, monitor shape, burn-in, does it work, etc. If it does not work, then $150 is a fair offer. You can't buy all the parts included for that price on a scratch build. If it works, $200 wouldn't be too bad of an offer. It really depends on the lady. It can't hurt to go in with $150 after you determine the shape and playability in person.