a vitamin d3 or cholecalciferol is a d vitamin that is important for the absorption of calcium from the stomach and for the functioning of calcium in the body it is used to treat or prevent many conditions caused by a lack of vitamin d especially conditions of the skin or bones
1 Behind-the-ear (BTE) hearing aids cost between $450 and $5,600. 2  Economy Hearing Products offers a very basic BTE hearing aid for about $630. 3  ReSound Azure retails for about $2,600 with programmable volume control settings, an open fit to minimize a plugged up sensation in the ear and a 330-hour battery. A hearing test is required before purchasing a hearing aid. 2  The test determines if a hearing aid is necessary and what type might work best. 3  Hearing tests can be free with the purchse of hearings aids or cost up to $250. 4  See How Much Does a Hearing Test Cost.
Of course, the price of the batteries is going to vary depending on where you purchase them. Considering the average price for hearing aid batteries in a retail store, here is a breakdown of what you can expect to spend on batteries for two hearing aids per size:Size 10: an average of $150/year. Size 312: an average of $80/year. Size 13: an average of $50/year. Size 675: an average of $30/year.If battery size and cost is important to you then you want to be sure to discuss this with your Audiologist when purchasing hearing aids. Be aware that the smaller the hearing aid is, the smaller and more costly the batteries will be.he reason for that is the digital processing that is taking place in a hearing aid is much more complex than that of a watch. Assuming the hearing aids are being worn 14-16 hours/day, the lifespan of a hearing aid battery will depend on a few factors: 1  The size of the battery. 2  The processing of the hearing aid.