However, is it grammatically correct to say that the Selling Price
resulted in 5.26 dollars?
It may be correct grammatically, but it is incorrect semantically. The verb result is used to link cause and effect, a process and the outcome of the process:
verb [ intrans. ]
occur or follow as the consequence of something : government unpopularity resulting from the state of the
economy | [as adj. ] ( resulting) talk of a general election and
the resulting political uncertainty.
• ( result in) have (a
specified end or outcome) : talks in July had resulted in stalemate.
New Oxford American Dictionary
In your case, Selling Price itself is the result of the calculation. A result cannot result in itself.