You have been interested in purchasing a digital camera. after doing a great deal of research on the models and features that are available, you find a camera with an extremely low price. as you are about to purchase the camera, you find that it does not come with a power cord, memory card, or battery -- all which must be purchased separately. you go ahead and purchase all these items, and the total cost surpasses what you would have paid at another store that listed the camera at a higher price, but included all the accessories. you have been a victim of the _____ technique.