Sony to announce a price cut for ps3! according to Amazon

[FattyDingDong]

when u looked for the 160gb ps3 on amazon  the price was 300$  and trade in value 215$

now if u go look the trade in value is lowered to 130$

http://www.amazon.com/PlayStation-3-160GB-System/dp/B003VUO6H4/ref=pd_sim_sg_10

what does this mean?