最近发现共享自行车越来越少了,价格也贵了,以前刚开始一个月的月租是5元,后来改为3个月30元左右,现在升到一个月20元了,我在想要不要退押金了,担心共享单车会倒闭。Recently, it has been found that sharing bicycles are becoming less and less expensive. The monthly rent for one month was originally in 5 yuan, but it was later changed to about 3 months in 30 yuan. Now it is in 20 yuan for one month. I am wondering whether to refund the deposit, and I am worried that sharing bicycles will close down.