請改文法～

Secondly, I will focus on economic forces. Based on the fact that Hong Kong economy is becoming better and the unemployment rate is decreasing, consumer gross income will increase. Therefore, this allows them to have more disposable income to buy Gucci handbags.

(Note: I think disposable income is more appropriate than discretionary income)

Secondly, I will focus on economic forces. Since the improved economic situation and reduced unemployment rate, consumers' gross income will be increased. This will make them have more discretionary income to buy Gucci handbags.

Secondly, I will focus on the economic forces. Because of the improved economic situation and lower unemployment rate, consumers' gross income will increase. As a result, people will have more disposable income to buy luxurious goods such as Gucci handbags.