Edit: Note that as per hogama's comment below, COTD currently has the same item for $129.99 + $9.99 shipping (link). That price ends in 2 days.
The RRP of the Ventus carrier is $209. This is the price you'll normally pay at places like Baby Bunting.
Babes in Arms (the Australian distributors of Ergobaby) have dropped the price of the purple Ventus by $50 on their online shop, not sure for how long. Shipping appears to be $5 via express post (based on a few random metro postcodes I tested). This would make it $164 delivered. The next cheapest I could find from a quick google is $177 (free shipping) from bubcarrier.
If you want the graphite colour one that's $179 + shipping. It's cheaper at
* toys r us $159.98 (thanks to cheapandcheerful)
* bubcarrier - $177 (free shipping), on backorder at the moment, more stock expected 31/8.
FWIW I have a Ventus (and a 360) and rate it highly - it got plenty of use in the hot and humid conditions of SE Asia last summer.
Even cheaper at COTD in purple for $129.99 + $9.99 p&h
I know, i was suitably impressed when i bought mine closer to the $200 mark too