I don't own any currently. Your coin is awesome! Tell me more about the value extra for a die crack these days. I didn't realize that there was a premium for such thing even though yours is dramatic!
From my days living in south central OK and living a few miles away from the Tiger King sanctuary, I was expecting a different king of crack!
I'm quite fond of die cracks. I think they give coins a touch of personality. Here's one of my favorites:
All the above are nice. I hope you don't mind a world coin. This is the definition of a "shattered die". I purchased it just because of all the cracks. Cambodia 1860
There usually isn't much of a premium for a crack, unless it is large and dramatic. The closer the die is to failing, the bigger and more spectacular the cracks become. They turn into breaks, or maybe even cuds. The really spectacular pieces will get a small premium. More of the value of cracks, especially on early coins, is the clue they provide into the minting process. You can trace how the die aged throughout its use. Or, cracks often provide a definite marker for a variety (which may have a premium based on rarity.)
Here are a couple of mine with some pretty special cracking. Both of these are nearly terminal die state.