For the Grip, there is a local shop selling Yonex grip at $30/30 pcs. It is on Las Tunas drive, temple city, CA, USA. Can't find a better price around this area. And the shuttle cock is a mess. Many supplier has no brand name chinese shuttlecock. The yonex birdies is way too expensive, I am talking about $16 plus!:crying: I will buy yonex racket locally since they have life time warranty, $40 for a new replacement. But you have to submit your racket with the string so they can inspect that the damage is not by worng sting method.
Yonex doesn't have a lifetime warranty policy, never has. Depending on region, the typical/most you'll get is a one year warranty.