Before revision:  Neglecting the impact of speculation here, the evolutionary model can be linked to a stochastic jump-diffusion model .
After revision:  Neglecting the impact of speculation here, the evolutionary model can be linked to a logistic decrease of the mean price of the good. The model is applied to electricity as a non-durable satisfying the model condition. The presented theory allows a deeper understanding of the sales and price dynamics of non-durables .