Hi OP. Hows it going? I'm from a beekeeping family and have been making beeswax candles for decades. I used to rent a stall every weekend at my local market. At the time (around 2005) I was the only candle seller, and my stall used to be £30 for the day. I tried a (beautiful) Christmas market too, but at over £200 for the weekend, I was left with only around £150 profit. It took me around 2 weeks to make that stock, and I stood in the freezing cold for 16 hours over that weekend to sell it. The hourly rate, therefore wasn't worth it so I haven't done it since.
Ebay and Etsy are absolutely saturated - often with cheaper alternatives I couldn't and wouldn't compete with.
However... some alternatives..
A few people remembered me from my early stall days, and kept in touch. They used to buy regularly. It's handy if you do a stall to have business cards ready for this purpose. The guy who ran the local Gastro pub put in large orders as he liked the idea of lighting the candles each night and them being locally made. Also, a lady with a gift shop in a very posh part of town used to buy lots and sell them for double in her store.
I then sought out other business owners who I asked to stock them for me. I usually offer a sale or return, and call each couple of weeks to replenish stocks / collect my 'takings'
It possibly helps that I'm in a pretty seaside town with lots of visitors year round and so have lots of gift shops, cafés and similar types of business. I made bespoke versions for those who wanted the candles to tie in with what they did (eg: Sandalwood and Cinnamon fragranced ones for a local Indian restaurant)
I couldn't go back to the cold hard days of manning a stall all day, but I still have quite a following via use of Nextdoor app, Insta, and I advertise on my street group chat. And also my DD's school year parents Facebook page. It's amazing how word gets round and you gain some regulars pretty quickly. Last Christmas was my best ever money wise, and most people came to collect from my home which was a bonus. One of the very few silver linings of lockdown!