Some people really and truly have too much time on their hands....
Pcopy X = β Pm + [(β Pr)/x] + T( Wα ) + N
Pm = price of blank media
Pr = price of recording devices
N = the nouveau factor (a constant used to explain residual value of an authentic copy)
W = wages per unit time (opportunity costs)
T = time it takes to make a copy including search costs
β = a time weighting factor indicating a decrease as a function of time
α = a time weighting factor indicating an increase as a function of time
X = the number of copies made on the same device (depreciating the initial cost of purchasing the recording device over the total number of copies made)
Edit: Ignore the spaces in the second set of parenthesis, as the board makes a smilie when they are absent.