Given that this is included in the Warehouse Clearance, you will see a 'VIP Offer' appear after adding this to your cart for an extra 10% off, bringing the price down from $29.99 to $26.99.
From here there are two options:
1) 8.8% cashback from Cash Rewards takes this down to $24.62 per bottle, cheaper than the previous deal from MWG.
2) New members can join using a referral link to receive $20 off their first order. This will bring the price of 4 bottles down to $21.99 each, plus delivery. Note that I am not sure if redeeming the referral offer will void cashback. Worth trying though for an extra discount.
Rated 4.1 on Vivino.
I don't see the additional 10% VIP Offer in cart?