I went to ShenZhen this morning and can't resist the temptation of getting this disc myself.
At the price of $ 40, it is worth buying. But what Modi 兄 said is also correct. Lily Chan is capable of doing more songs of her own. On the other hand, I think the producers also worried about their own production may not be welcomed by the audience and thus sales drops.
The problem with re-doing other peoples' songs is that 人難免先入為主. People may not like her way of presenting others' songs in that manner.
Have to say that this is really personal; you like it, you like it ELSE no matter how hard others try to convince you, they won't be able to change your mind.