That would be $13.75 X 2 (4oz bottle X 2 equals JCrow's 1-8 oz bottle)= $27.50 for an 8 oz. bottle plus S&H of $7.00=$34.50 compared to $55 even if NO S&H charges are made is still less expensive!
Science company's quality is Reagent, which from my understanding of the post above is a higher quality than USP. USP is JCrow's quality, again from my understanding from above, is the LOWEST high grade!
JCrow comes with information from Dr. Jarvis, for some that is a good thing. For others, it is not necessary.
Science company delivers quickly. JCrow, I do not have an idea of their delivery.
It is a no brainer which is comparable. Science company lower prices, higher grade to JCrow's higher prices, lower grade (even though still a good grade).