Selling Prints as Postcards (UK)

[Biomech]

I have some photo's from around my city - landmarks etc - that I'm thinking of printing as postcards and trying to get them stocked by the local shops. I've noticed that all of the postcards available are the same classic flat coloured shots. I maxed out my fill light and recovery in b/w mode and have some quite interesting results (basically they look like drawings), which are far different from what I've seen around.

My question is, I can print the cards onto 6x4 postcard paper that creates waterproof, ready to go postcards for £0.189 (18.9p) plus electricity. What price do would think they should be pitched at trade?

I could go classic with something like 50p trade RRP £1 or go higher end at £1-£1.50 trade and £2-£3.50 per card retail.

They would essentially look like this:

[private]

If you can - and this is me speaking as a tourist - get some photos of the many trains in England - can you tak epics inside of the tube station? I remember I HUNTED for days with something with a train on it - never found it.

At forst I would charge what everyone else charges and if they fly off the shelf raise your price. The store owner should let you know if you are too high or low...