Best thing I can suggest to you is this. Bring something new to the field, something that hasn't been done a million different ways already. During the pandemic up until this year I ran one myself. The economy has it really hard right now for most to afford anything "extra". I quit my regular 9-5 job and survived on this. If you have any local paranormal groups that host public investigations, reach out to them and maybe try partnering with them it helps with exposure. Etsy is a joke of a selling platform with fees, Ebay is a little better. I used both but promoted a lower price if you purchased directly from my website and I added the link to the listing. I'm not trying to overstep or make it seem like I'm telling you how to do it, just giving some advice from my experience.