Alain, pardon my lack of sophistication, but I fail to understand if you price the prints as a function of the surface area, what difference does it make to start from the small print and multiply up or to start from the large print, and divide down ?
I do not price in function of the surface area. I never said so either in my previous posts. This is an assumption. In fact, if you re-read my posts, or look at my price list on my site, you will notice that I am pricing per MAT SIZE and not print size. This means that if I was pricing by the square inch, I would be pricing the mat at the cost of the print. The reality is that I am just selling the piece. It also means that in this mat size, the print can be ANY SIZE. Meaning, if for a particular image I feel that 8x10 in a 16x20 mat is what works best for this image, then this is what is delivered for that particular image. It also solves the problem of panoramic prints which are always odd sizes.
In fact, when talking to customers, I don't even mention sizes. I use the name for that size. For example, my large pieces are called "Museum Colection" "Master collection" and so on. I am selling art, not lumber or drywall or windows. Nothing wrong with selling the later, simply that in art size isn't the emphasis. The art is. As a matter of fact, when you get to top quality widnows & doors construction, you let go of the sizes quickly to focus on the materials, built quality and so on. The size is addressed quickly, and the product quality is focused on primarily.
Here as in just about everything that I do, I focus on quality vs quantity. I personally do not believe one can do both quality + quantity. I have an open challenge in which I invite anyone who knows how doing quality & quantity can be done to contact me. I am willing to make you a wealthy person if you can prove and teach me it can be done, provided you offer a warranty about your services, proof that you have done so yourself, and evidence that you can do so with my current artwork as presented on my site.
What I do, is price my largest piece, then apply a reduction factor for smaller sizes. One could also price all pieces the same, regardless of size, but I find this approach illogical and people perceive it as dishonest. As I said, eventually there will be just a couple of sizes available. My approach is to simplify things, and in this view it makes sense to have only a few sizes. I think that 40x50, 20x30 and 16x20 is most likely what I will be doing. Too many sizes confuse customers and make my life complicated. As I said, I want to simplify things.
The difference between moving up or down is that when you go from smaller to larger, you assume you are selling mostly the small sizes. When you go from large to small, you take it for granted you sell more of the largest sizes. What does that mean? Simply that in my situation I am not that concerned with selling small sizes. Threfore, the price is a percentage of the large sizes, rather than the other way around. A look at my price list on my site will show this better than I can explain it here. Again, I will be removing sizes soon so don't delay to take a look.