RE: is that possible to build boeing 737?
Nothing is impossible. However, from your website, what exactly are you ordering? Is it a home simulator setup? That won't have anything to do with your model aircraft, except for maybe getting the scale appearance of it all. Are you talking about building a model replica of a boeing that will actually fly? Possible.
With jet turbine engines? Just a guesstimate, but I'd put the cost somewhere around 10,000 dollars or more. The two turbines alone will cost you between 5,000 and 7,000 dollars--depending upon the thrust of the engines you order. Good luck with it. If you have the money to spend, then go for it! Lots of time too--hundreds, if not thousands, of hours.