Actually the 175 extra are only there until October 31 (unless they find a workaround that restores their PC pricing to PC Club members sooner, has caused some quite heated discussions/rants in several DAZ threads).  DAZ says anyone signing up to the Platinum Club before October 31 gets the 10 PC Bonus item coupon and the 15 PC Bonus item coupon.

However it has been CLEARLY stated many times by PC administrators that ALL PCBONUS item coupons expire November 30!  All of them.  No new ones will be issued after the end of October.

But in the ArtZone Chat today, they did promise a new promotion for renewals coming very soon.

Brett