Sometimes the temperature does not decrease with height in the troposphere, but increases. Such a situation is known as a temperature inversion. Temperature inversions limit or prevent the vertical mixing of air.
Middle range machines can cost on average $400 and are often multi-function with copier and laser printer capabilities. Finally, high-end machines which offer high speeds, high capacity and high resolution come at a higher price-expect to pay $1000 - $2500 for such a fax machine.
1 All-in-one printers also offer wireless solutions by means of wireless all-in-one printer fax machines. 2  The cost ranges anywhere from $105 to $315. 3  Laser jet wireless printer fax machine uses a higher quality ink for printing documents and can be bought from $300 to $500.