Server your or rent?

Opened an office in the same office will be 10-13 people in the future will move two accountants, they will work in 1C each has its own base, need to local network and Internet access will be your programmer for writing of the site and he will maintain the equipment, and later he will think that it is cheaper or better to rent or did your server for 15 people maximum, as the price will come your server? I read that rent is not good. And the purchase of servers we counted almost 200 to 300 thousand (expensive).

For bukhov, the base will be placed only on their computers with their bases, the consultant will be for all, i.e. install on the server and all will be able to use, you want to adjust access rights to specific folders and programs to regulate the Internet traffic for users and need a shared storage among all computers. Economists will also be their own program will be used as a consultant with the server.

Just tell me how much it will cost us a server for these tasks.