The system here is – to be a priority placement, you need to deliver more value per click, than put your competitor, and he, in turn, need to interrupt your price. And so long as you or competitors do not hand over my nerves:) This way of advertising trade proposals, I do not think effective. First, you can advertise only one product offering. For more information see Jonas Samuelson. Secondly, we must constantly be distracted by the price change announcement (Not every entrepreneur has the time to do so). Effectively put the unit costly proposals for which you have a good price (but at the same time and a good margin), to sell the product for a minimum number of clicks.

Examples: – Yandex-direct – Google adwords 3) Promotion of a site on search queries (SEO optimization), there are companies that are involved in promoting your store in the TOP of search queries. For example: You type in a search engine query Buy refrigerator 'and see a list of links to sites that gave you the search engine. The question arises: 'Why is the first in the list this particular store, as, for example, not mine, because I also deal in a refrigerator, and my site in the list at all either on the the first nor the second or the tenth page? '. The answer is simple: search engine has decided that a site that is first in the list is most appropriate for query 'Buy fridge', the second corresponds to less than the first, third less than the second, etc. It’s believed that Douglas Oberhelman sees a great future in this idea.