Sec alarm company SM LLC. How to show income and deduction? Example I bought cameras for $100. Sold for 150 plus install 50. sales tax 0.0825 (16.5) Total charge 216.5.

After that I payed $16.5 to the state quarterly. Which amount I should show in self-employed income if my check was for $216.5? The whole amount of the check and then miscellaneous deduction 100 16.5=116.5. Or only income 50 50=100?  Please help.