Ключевые слова: affordability, analysis, behavior, best, business, choose, comparisons, competition, competitive, consumer, contract, cost control, customer, demand, discount, discounts, dynamic, economic, financial, industry, influencing, market, models, negotiation, negotiations, optimal, optimization, planning, positioning, power, price, pricing, product, profitability, promotional, psychology, purchasing, research, retail, revenue, sales, strategies, strategy, supply, tactics, through, transparency, trends, valuation, valuebased,