They start at less than 100 dollars.
A combination microwave can cost different prices, depending on the size and model. A combination microwave can cost as little as $125, or as much as $500, or more!
It depends on what kind...just like today they cost differently.
The cost of a small microwave oven varies. They are usually less expensive than larger microwaves. i do believe larger microwave ovens cook better than smaller ones. The space the larger microwave oven offers helps the power to circulate and make sure th food is prepared faster and properly.
If you have the available floor space, a microwave cart is an excellent way to free up counter space and provide some extra storage. Bed Bath & Beyond has a great selection of microwave carts that are affordable, versatile and easy to assemble. Expect to pay $125 - $350. http://www.bedbathandbeyond.com
not much
A microwave does not give off electricity.
A microwave is a form of electromagnetic radiation and has no intrinsic weight.
The microwave energy in a microwave oven is of a much lower frequency than light, but light is electromagnetic energy like the microwave radiation is.
none
not alot
Each oven will have a variable of cost depending on the features and types of resources provided by an oven. There will be alot of different models for sale, using their website should allow you to compare prices suiting your needs.
a microwave requires a much higher frequency