the last time i also post the list of dealers that are participating.
u shouldve checked here 1st before going to buy from any seller.

and of cos must buy between 1 to 30 sep, already stated clearly rite?

and redemption process same like last time.
Buyer must bring the Receipt and Razer’s Certificate of Authenticity to the Redemption Centre.
Buyer will request to fill-up the Redemption Coupon.
Redemption Centre will punch the Certificate of Authenticity as the proof that Redemption already take part.
Redemption Centre will Photostat the Redemption Coupon, Purchase Receipt and Certificate of Authenticity for submission back to Razer.

You're saying you want to use a certificate of authencity from a mouse you bought a long time ago to claim the freebies for the september promotion? You need to buy any of the listed items WITHIN sept 1-30 to get the freebies for this month's promotion la.