I am selling some of my poetry. When I am pricing it, considering the cost to produce it, how much of the cost should be a profit to me? For instance, if it cost me $1.00 for each poem, designed and printed, what would be a reasonable price to charge after I have first recovered the $1.00? Should the total cost of the poem be $3.00 ($1.00 to make poem plus $2.00 profit)? Is there a certain percentage I should consider for profit to me?