After some playing around this does seem to work for ALL Auto club memberships. Insert your membership number in the box at checkout. If the discount isn't stacking properly, try clearing browser cache, using incognito mode, a different browser or a different device. Also, of you live in a regional area be sure to change "your store" to a metro store and choose the free delivery option to get the lowest price.
Price is $151 for non auto club members or $166 in regional areas. Still good prices.
Thought this was a good price for a powerful hand held UHF. All the features are in the link.
If you add an Auto Club membership barcode this seems to come to $109 as it applies 20% off before the $55 off :)