The previous one that was sold for about $1750.00 on ebay. And another one sold at RR Auction for about $2650.00. This one that was sold had the original envelope and the other enclosed documents that came with it. The seller is also trying to find the ticket stub from the show he attended that was purchased through the newsletter.
I guess the price depends how how much you want it. I know a friend who bid $1500.00 for it but someone wanted it more than him. You don't see these coming out for sale too much now. As with all Nirvana signed memorabilas, it is getting harder and harder to find authentic signed memorabilia.
But I don't think many of these newsletters would have been still around. This seller happens to stumble upon the newsletter while cleaning out his room I giuess!!! :)