2019 MARKET UPDATE: CRAZY HOT IN HIGH GRADE!
This is one of the top-performing Bronze Age comic books of the year. You did well if you followed my advice in last year's 100 Hot Comics update.
Timing the top of any market is a tricky business. Just ask people who bought Bitcoin at $20,000 per coin.
I usually say to lock in your profit if you get a chance, and this book is no different. If you're sitting on a 9.6 or 9.8 you bought in the past couple of years, then don't be greedy. It might be time to take your money and run.
If you're considering this book as a potential investment, then I urge caution. The boat looks to have sailed.
2018 MARKET UPDATE: DARK PHOENIX MOVIE DRIVES THIS BOOK HIGHER
Yes, years of speculation were correct. Phoenix is the subject of a 2018 X-Men movie, and her first appearance in XM #101 is hot property.
Uncanny X-Men #129 is now on the Hot List, too, as it follows the movie storyline quite closely, and is well worth a gamble.
It has been for some time really, so if you're already the proud owner of a high-grade copy, hang on to it until the movie is closer. Most high grades have been appreciating 10 to 30 percent since this time last year.
If not, you may have missed the boat. I still see some upside in CGC 9.6 copies, but don't hang around for much longer.
This is not a book to own in lower grades. It's simply too common.
Here are recent sales:
2017 MARKET UPDATE:
When I was tipping this book two years ago, a CGC 9.8 copy came up for $1,300. I advised a reader to snap it up. Just a week or so ago, a similar 9.8 sold for $2,100.
Like all Bronze Age key issue comic books, you need to stick to high grade. Still, it's enjoying price bumps in most grades above VF 8.0.
John Byrne's classic run on the Bronze Age X-Men comic has become legendary.
Jean Grey, who eventually becomes Phoenix, is a truly key member of the super-team and important in all the major storylines.
This is truly deserving of a place in the most valuable Bronze Age comic books, prices in high grades are strongly rising, and it's a must-buy if you are at all optimistic of Marvel reclaiming ownership of the X-Men movie franchise and bringing Phoenix to the big screen.