If a simple variant of the listed functionality with a relatively simple design that can be in 30 thousand rbl. to meet. If you need all sorts of Fennec web2.0. fancy javascript, AJAX, professional quality design, 150 types of internal pages (for each page your super pattern with five scripts) etc. and then in a couple of millions can not meet.
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In General, a simple variant of 30 m. p., more info can be assessed only by understanding all the requirements. Ideally you want a detailed preliminary sketches.