ISO of black pleated Burberry Brit Zita dress size 4 or 6

ISO Burberry Brit Zita dress. I've been searching for this dress for years. I actually found it on Poshmark, but the seller is inactive. If anyone has this in their closet and willing to part with it I would gladly pay $300+ for it. Thanks I also have it in a size 2 but it doesn't fit after having kids. Willing to trade or pay.