I hate to mention Cash Converters (or eBay), but my local Cashies have got one of these on sale on eBay at the moment, asking $369 Buy It Now or Best Offer. I offered them $200 the other day via the eBay Best Offer process and got knocked back, but its been listed for a while (initially at $440 BIN), so you could try your luck, if you're really keen.
CELESTRON SKYSCOUT PERSONAL PLANETARIUM 93970 SKY GUIDE
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Disclaimer: I realise that Cash Converters AND eBay is a pretty dubious combination, although technically I think as a retailer they must warranty anything they sell. No personal affiliation, recommendation, etc.)
