Yea Peggy, it's that third party that throws the curveball. I've had a handful of retail vendors that were just thrilled to allow me to set up a little shop in their store, set the pricing and restock monthly. Since they were "touristic" shops in my scenic corner of New England I could price retail over $7.00 per card. The cards were regional scenic icons and fall foliage scenes, I would gross $200.00 in a slow month, and peaked at $600.00 at one specific location for October. They took 30% commission, came to around $2.25 ea. and my cost was just under $2.00 ea. using "Photographers Edge". (they are a rip-off) The net profit was only in the neighborhood of 2.00 per card.
Other retailers I engaged with while I wholesaled cards I found had NO understanding of the "impulse purchase" at the register. I told one very hard edged woman that I honestly have no idea how she plans to stay in business with her tactics. Sure enough, she lasted in this very busy little town just under 2 years....and yes I did stop by to rub her nasty nose in it. My experiences proved that most retail locations have zero knowledge on how to appropriately market the product in their store, and of course they mostly felt they knew much more than I do about how to market them.
That's just the range of mindsets you'll cross trying to establish a network of good retailers. My math dictated that about 85% of all my card sales were sold by only 15% of my retail partners!! The 15-20% of retailers are out there however, it's just finding them..