Wouldn't worry about it. NHS-Aliexpress ships triple zip lock bagged inside the foil bag so a foil tear won't get through. You can see it didn't rip through, it just stretched a bit. Just duct tape over the outside tear and keep the inner bag sealed. I've bought lots of great supplements from them (the only thing that stinks is long shipping time). If the inners were broken I would ask for a refund so it's protected by purchase protection (credit card). He has good seller feedback.
500g is a huge amount. You'd just transfer about 50g to smaller bottles anyway so you wouldn't be touching that bag except to fill the smaller bottles once a month.
I do this with NHS nicotinamide riboside and others all the time. I probably saved $400 this year on that one vs. retail capsules. The pic shows you how they ship but I removed two of other other zip lock bags for easy access so you'd really have to work to break through all that plastic.
The other bulk oxymatrine on Ebay isn't lab tested. This is a good deal.
I think Chia's Equilibrant costs $120 PER MONTH.View attachment 39031