Probably my favourite MOC as discussed via PM I won't give a valuation as am interested in buying it, but I'm sure others will give you their opinion. By the way this is the more common brown hair variant so I have amended the title.
You do see a few of these for sale, so not super rare but rather cool anyway.
I'd say £400 would be a good price for buyer and seller and £500 might take a while to sell but probably would to the right person if they needed and one hadn't come up for a while.
That was my logic when I was looking for one more actively. A load were around for more, but didnt seem to sell.
i saw one sell for £500 there abouts on.one of the fb groups recently mind you thats converted from dollars as it was a usa based. the bubble was in better condition mind.
Given the edge-wear, bubble damage and the litho scratch below the age info boilerplate its £300-£350 in my book. I feel the earlier prices are a little high for the condition for me. It is still a very nice item and still sought after though.