There are a few different models. What you're describing (stocking a product owned by another entity and giving them a cut of the sale price) is frequently known as consignment. It has minimal risk for the retailer, and typically involves non-perishable goods (clothes, electronics, etc).
Other retailers purchase the product at a discounted price from another entity and then sell it at their location for a higher price. This is the wholesale model where a producer is selling so much product to a retailer that they'll give them a discount on the price.
Wholesaling comes in 2 main forms: As described above, or "buyback". With a buyback contract, risk is shifted back onto the producer, as any unsold stock at the end of the contract term is "bought back" by the producer, typically at price they sold it to the retailer (possibly minus stocking/shipping fees).
I have no idea how the specific places you mentioned run their shops, but having been involved with several companies that produce physical goods for market, it's VERY common to sell to major retailers, and not just run consignment contracts (in fact, we ran VERY quickly away from anyone offering such deals because we would have to tie up inventory on their shelves that we may never be paid for).
There are a few different models. What you're describing (stocking a product owned by another entity and giving them a cut of the sale price) is frequently known as consignment. It has minimal risk for the retailer, and typically involves non-perishable goods (clothes, electronics, etc).
Other retailers purchase the product at a discounted price from another entity and then sell it at their location for a higher price. This is the wholesale model where a producer is selling so much product to a retailer that they'll give them a discount on the price.
Wholesaling comes in 2 main forms: As described above, or "buyback". With a buyback contract, risk is shifted back onto the producer, as any unsold stock at the end of the contract term is "bought back" by the producer, typically at price they sold it to the retailer (possibly minus stocking/shipping fees).
I have no idea how the specific places you mentioned run their shops, but having been involved with several companies that produce physical goods for market, it's VERY common to sell to major retailers, and not just run consignment contracts (in fact, we ran VERY quickly away from anyone offering such deals because we would have to tie up inventory on their shelves that we may never be paid for).