Let's have a look at it from a little distance: some years ago I was offered a show in a local gallery for a period some months ahead. I said okay, exactly when - I need to get stuff done for such an event. We'll give you a definite date soon, they said.
I went to see a framing service here, and asked them about framing a set of around thirty A3+ prints (I think it was around that number, but it was a while ago, but enough of them to bring in any volume discount price I might get.) They quoted me €40 a pop.
I began to get suspicious as the weeks went by and the people didn't contact me with a show date, so I sat on the frames order. Just as well. They had changed their minds about photography, and had reverted to painting and sculpture only. Which is fair enough, but it would have been the decent thing to do to advise me... I only discovered the truth by bumping into the gallery owner's daughter in the street.
But, the point is this: how much more (or less) do you imagine your time, work and prints to be worth than freakin' frames, whether you are the one supplying them or not? The relative values your create remain crystal clear to the buyer.
As for raising your prices later, forget it. The thing I learned when I started out in the photography business was this: you cannot raise your prices from where you started with the same people; they think you are cheating them. Your only route upwards is by dumping low-value customers and going for the higher fruit. You have to try to start somewhere near to where you hope to arrive, or you will at best stand still, but most likely lose money.
If your living does not depend on it, why even think of starting for pennies?
It's not going to be easy and neither is it impossible.