Setting individual image prices like another

[MT Stringer]

I have been looking but I can't figue out how to set an individual image prices like another image in the same gallery or maybe elsewhere in another gallery.

I have created a few posters that I want to sell as 8x10's and 16 x20. I would like to be able to easily set the prices on additional posters the same as the first one. It was a pain to clear all of the prices and then I still had to go through and clear out some that appeared. All I want to sell is 8x10's or 16 x 20's in several different paper (glossy, Lustre and Metallic).
Help!

Example (http://mtstringer.smugmug.com/Sports/Softball/Texas-Peppers-vs-Kingwood-Edge/12472430_R3cAQ#924459549_Mr4v2)

I have others I want to price just like this one.

Thanks
Mike

[MT Stringer]

I think I have answered my own question. With the individual image selected, I set a custom price of $0.00 for all products. Then I went into the few 8x10 and 16x20 boxes and set those prices as needed. Then set the download price also.
That was a lot quicker than the way I was doing it previously. The key was to use the "custom price" instead of "clear prices".