Sparesbox have a nice combo deal going with this engine oil for $28.53 each delivered.
Buy 2 for $25.68 each
Buy 3 for $24.25 each
Buy 4 or more for $22.82 each
NOTE This listing may only have a quantity of 10 units but they are restocking fairly consistently.
If you are a eBay Plus user please remember to use your monthly $5 off Plus items voucher if spending $50 or more.
Sparesbox also seem to have a 20% off promo applied to a pretty massive range of items too including filters.
Postage Excludes: Northern Territory, QLD Far North, SA Regional, VIC Regional, WA Regional, WA Remote