Remodeling a Kitchen can be as expensive or inexpensive as you make it to be.  It all depends on the products and materials that you choose for your kitchen remodeling.  Usually the most expensive portion of your budget will be allotted to cabinets and could cost you from a couple thousand dollars to tens of thousands of dollars.
There are about 6 main categories that affect the price of a kitchen remodel.  These are cabinets, appliances, countertops, sinks and faucets, and walls.
Let’s start out with cabinets.  The construction quality, material type, finish, and installation type are important when affecting price.  But the main price determinant is if they are custom or stock cabinets.  If you want to custom make each one of your cabinets and have them custom designed this will run you a lot more than getting generic cabinets.
Next are appliances.  The factors that affect the price of appliances are the finish, features, and power source or output.  Freestanding with standard features appliances are the most inexpensive and are at the lower end of the budget whereas professional custom built appliances will run you quite a bit of money on kitchen remodeling project.

Countertops are another factor in determing a kitchen remodeling budget.  The price of countertops are determined by their quality, thickness, material type, and ease of installation.  On the more affordable end of the spectrum would be laminate countertops.  With a modest budget you could get wood, tile, or solid surface.  And with an exorbinant budget you could go with stone or solid surfaces.
Flooring: installation and material.  If you go with vinyl, laminate or linleum you can save a lot of money.  However if you want to go with stone or hardwood this will be more expensive but will give you a much more polished and expensive look.
Sinks & faucets: finish, accessories, size, and material.  These do not affect the price that much, it mostly just depends on how fancy you want to get and how big they will be.
Walls: The detailing of the walls will affect the prices.  If you go with painted or vinyl walls with simple trim you could save yourself a lot of money.  However if you go with stucoed walls or hand carved items then you need to have a much higher budget.  Wood-paneling can still be affordable if it is not that detailed.
And there you have it.  The main products that will affect your next kitchen remodeling project.
The cost of a complete kitchen remodeling can be affordable.  You have to be able to make compromises on some products in order to get the best pricing possible.  Check with your kitchen remodeling contractor to see what types of products they use.