I picked up a G610 Orion Brown today at JB Hi-fi Indooroopilly for $69. It had $149 on the sticker, but I know it's not listed on their website so got them to scan it at the till just in case.
I don't know if that's a pricing error or something store-specific, but worth checking your local if you're in the market for a mechanical keyboard and missed the recent G810 $119 bargain.
Should post this as a deal instead! Looks like an awesome price.