Wow - Incredible response… It fails to make sense that you bought 150 off 1L bottles “to stock up on materials as you print commercially” If you wanted to stock up and do it sensibly then a barrel (200L) would have saved a LOT of money and space, equally buying the IPA in 20L containers would have helped again in both respects, but to buy 150 bottles of 1L does not make sense if it was intended for your own use.
Sorry, but the more you write then the bigger the questions that are asked. I too wonder if it was just an attempt to overcharge the 3D printing community. At least now you will have lots of IPA for yourself.