Been a couple of deals around for these umbrellas lately but I think/hope to the ozbargain overlords that this is actually the cheapest we've seen them.
Free delivery on non-bulky items from www.dealsdirect.com.au until 23:59 29 April 2014. Shipping on this item is normally $11. Normal sale price of umbrellas is $19.95, but using the code "WELCOME10" brings the price down to $17.95.
UPDATE: Need to UNTICK shopper protection box prior to processing payment. S/O Frbargain for highlighting this.
Enjoy and stay dry!