I like what you're trying to do here.
As a hobbyist and home R&D researcher for some maybe future ventures, there are some solvents, for example, that recently have become a real pain
to get.
Do you price match at all?
There's 1 Ebay vendor and 2 Amazon vendors last I checked that charge $60 for a gallon of dichloromethane.
Which really shouldn't cost anymore than acetone at the hardware store but, eh, such is life.
I made an order, and it was at my door two days later. $60 included shipping. And the product very satisfactory .in terms of purity(re-claimed by
re-distilling countless times).
To be honest none of your listed items I would consider to be a good deal.
But I understand how it goes, especially just starting out.
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