High concentration bpc 157

I’m curious why there isn’t a ton of higher concentration bpc available? Generally the highest I see is 20mg vials. But I just picked up some 40mg labeled vials that tested at 53mg, and it got me thinking if there was a reason you don’t see it getting made that high?
 
I run a mg a day, would like to know where you got if price is right. But its more and more common for ppl to run everyday, at a 500mcg to 2mg dose.
 
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