He's from South Africa. I seem to recall importing gun parts from US is problematic. I suggest repairing it. Bed the back end inside with JB Weld and fill the crack with colored epoxy. The pigments are available online and unlikely to be stolen in the mail. If you are unfamiliar with bedding, come back here for help. Lots of us have done it.
My 03A3 Springfield developed a crack in similar location years ago and I repaired it. If you didn't know it was there, you'd have a hard time seeing it. Here's a photo.
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It's held up fine for decades. Of course, a 30-06 is not a 458 magnum. But the repair should hold. Last year I acquired a used stock online for my 404J built on Czech Mauser. Discovered it had two internal cracks starting, one behind the recoil lug and one ahead of the trigger. Not surprising as the gun originally mounted on it was obviously a heavy caliber thumper: wide profile barrel channel and sling swivel at butt only ( = rifle had an African style barrel band forward sling swivel), but the stock had NO reinforcement! My guess is the person who ordered the build for that stock was more into cosmetics than common sense. Anyway, I bedded the action end to end, added Winchester crossbolts, and put a steel rod through the wrist. It's holding up fine.
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I strongly suspect your stock cracked because the crossbolt loosened. In warm humid environments wood expands during the wet season and then shrinks again during the dry winter. Check your crossbolts. I'll bet they need tightening.
