I can share my journey to this magical glen
I've only been here for a short amount of time- joined at the end of Jan this year.
I had been collecting various MJB coin replicas for a number of years;
I enjoy having a physical reminder of my commitment to btc, and to try and incorporate this into my daily life.
The physical keeps me on track for the digital accumulation.
I was getting pretty damn disappointed with the MJB replicas, because many of them are extremely low quality price grabs and I'm a huge sucker for quality handmade items. I had known about Casascius coins, but they were a bit out of my price range, and so it took me a while to realize that there were cheaper alternatives for physical coin storage. Looking at Casascius, I eventually stumbled upon Satoris and other more mainstream facing coins- so i began purchasing them through the only marketplace where i knew they existed, ebay.
After buying some coins on ebay for a period of time, I eventually ran into a forum member here who said that he posted his stuff not only there, but a few other places, one of them being bitcointalk. So I hopped on over here, seemed like the smart place to go- the genesis of the coin community.
I would have started here first, if I had known this place existed. But by and large I would say this place is relatively unknown, and collectible btc coins are even less known. Just even perusing reddit, i come across a number of bewildered posts when people encounter Lealanas, even from people who are actively purchasing bitcoin and the alt coins- the people who I would guess would be the prime consumers of these collectible coins.
When it comes to increasing traffic to your website, my suggestion would be to put up listings in the more mainstream marketplaces. For example, putting up listings in places like ebay or facebook marketplace that are slightly more than you would normally charge, and then having information about your marketplace and saying thats its cheaper buying direct. This will then encourage people to check out your page and will be organically introduced to more kinds of physical coins than they would through something like ebay. I'm not sure if you'll have information about said coins on there, but links to bitcointalk's encyclopedia/sticky pages would be a great bridge back to this place.