I understand your feeling bro as I am also one of the so-called victim during the transaction with this irresponsible seller.  

In my case, I have purchased my unit (Lenovo Y50) at a marked up price which I didn't realize until I have banked in extra money to him after his confirmation of stock availability. Well, I just can blame myself for getting the laptop too eagerly without waiting for the reveal of RRP. However, what irritates me more is the change of his attitude before and after the sales especially after I have banked in the full payment to him.

He started to disappear online for at least a couples of weeks, didn't have time to reply my pm due to very buy schedule, seems can't even bother to liaise with the shipment until I have really frustrated and keep spamming him pm, and last but not least the warranty which was promised to be 2 years ends up with only 1 year registered and since then he has never replied me regarding this warranty issue... 

I have all the FB messages as the proofs that this seller is truly untrustable and unethical for his sales to service. I know my case is just one of the many out there for sure. I have contacted some other buyers and they have been facing the same problems as well. No ranting here but just giving out information to other ppl to avoid this irresponsible seller.