I'm a retailer and all day every day I'm pestered by people who want me to sell their products. Many of these products are pretty much the same as the products I'm already selling. Some of these products are things which I know perfectly well are of no interest at all to our customers. Some of these things are completely unrelated to the ethos, purpose and style of my shop. Mostly the margin offered is insufficient to justify that product taking up shelf space. Often the quantity in which you have to order is completely unrealistic both in terms of my likely sales of that item and of the amount of storage space available to me. Often those urging me to buy new products want payment up front while existing suppliers offer 30 days credit plus a much wider range of stock which makes it easier for me to meet any minimum order. A few of these existing suppliers offer goods on a sale or return basis knowing that I will take many more products on that basis and try out more things I feel are 'borderline' for my shop - we stocktake those products at set intervals, pay for what has sold and the supplier then tops up my stock. For some products you'd never dream of such an arrangement but for some products it works really well for both sides.
Also, of course, it is the dream of most suppliers to see their product in every outlet in the land, but actually the more places something is sold (unless it is immediate consumables like chocolate or cola) the less value it offers to any individual retailer. In fact if you are a specialist retailer the fact that something is on sale in all sorts of places may mean that you don't want to stock it at all. Two of my customers are yoga instructors, I trade within walking distance of a Sports Centre, very probably your products are already being offered through those people and that Centre so why would I want to stock them? I want stock which brings customers into the shop, not stock that they can see everywhere else.
The suppliers I buy from and keep buying from tend to have a good understanding of retail and the realities of retail. I get the impression that you love your product - which is good - and have a good understanding of your product but little understanding of retail.
If you are selling through Yoga Studios, Gyms, etc then presumably their main income comes from fees for using the facilities or for attending classes, anything they can persuade the client to buy on top of that is an extra source of income but presumably not the main source of income. Also they have, as it were, a captive audience for your type of product as the clients are already there doing their yoga or running on the treadmill or whatever. But a shop's almost total source of income is selling goods so every item has to earn its shelf and storage space and if it doesn't or doesn't look to the retailer as if it will then there are an endless line of other suppliers offering other products...
