“…The second secondary data collected to complete the first research objective which was providing the information of concept 'spending' was gathered from the previous researchers who were (Fornell et al, 2010), (Jang et al, 2016), (Otto et al, 2009), and (Matzler et al, 2007) discussing the concept of customers' spending from the different back ground of businesses.Fornell et al, (2010) identify customer spending as an important factor in businesses and underline the importance of predicting aggregate customer spending to marketing planning, whereas Jang et al, (2016) state that estimation of customer spending needed at competing firms, so that in obtaining profit, the data on competitive spending is needed. Otto et al, (2009) find that spending in general, and especially shopping, has significant informative potential as it transfers an expression of people's preferences to purchase and differing in sorts, frequency, and variability. Matzler et al, (2007) discuss customer spending in the hospitality industry and the research result highlights that customer spending behaviour is an important variable as the growth of revenue can be reached by increasing the average amount of customers' spending.…”