For full disclosure... the fact that you're free doesn't personally bother me one bit from a business perspective... if I'm losing money to a free dj, the issue is me, not the free dj. There's something to be said about being a free dj though... the reality is a free product can be mediocre at best. I say this from experience (you can research my work), simply because the amount of money necessary to develop a business that can charge $2000 for an event is going to run you tens of thousands in expenses each year. In 2018 my expenses were nearly $100k, but were 100% necessary to grow my business to one that currently averages $3.5k an event. Of course even at sound only productions with minimal equipment, you still need a decent budget if you're doing this more than just a handful of times a year... specifically for insurances, an assistant (presumably on payroll with workmens comp to avoid legal issues), a website, vehicle maintenance, gas, etc. If you do it just a couple of times a year, it's easy to eat the costs... but then again you're not really taking much business away anyways.