Iron Fist is set to debut on TV in the upcoming Marvel series, and it's odds-on that Sabre-Tooth will make an appearance at some stage.
A book you ought to consider is Wolverine #10 from the 1988 series, which features the first Wolverine vs Sabre-Tooth battle. It's much more affordable, though a lot more common in high grade than Iron Fist #14.
Values of this book are complicated by the existence of a 35c price variant. The Marvel price variants were experiments in the 1970s in small test markets.
Our advice is to stay clear of these rare books if you're on a budget, as their value is hard to predict, but suffice it to say if a nice one comes along, and you can afford it, buy it for sure.
For a regular 30c edition, stick to CGC 9.8 with white pages. "Centering" is important (how nicely squared up the front cover is) on books like this, which are desirable but relatively common.
Any advantage you can get when it comes time to sell is a bonus.
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