What is it worth? The console is yellowed and has been opened and had something done to it by the previous owner. I haven't opened it up to see what exactly. It did boot up and play a game years ago when I first purchased it, so for the purposes of valuation assume it still works but has been opened and modified in some way. Necklace included. (bear with me as I figure out how to upload images...)
Typical, eh? You post a price check within the rules (thanks - not many seem to read them!) and the auto-moderation system hides your post! Don't worry, it might happen again for your next few posts, but we will get round to approving them!
$350-$400 is a fair price. Depending how complete it is, and the necklace is the rare part. You can still pick one of these up in similar condition from Japan around $400.