Don't be fooled by "tax deductible". that only means you will have in your
pocket the percentage of you expense that your tax bracket is.  You do not
get $ 1 back for each $ 1 expense listed on a Sch C form.

If in 28 %  bracket,  then  $ 1 expense means only 28 cents back, but
28 cents is better than 0 cents.