Sparesbox $10 off on $50 spend

Just got this email from Sparesbox just in time as I was about to do the oil change. The offer may be targeted but the code appears to be generic. Sparebox appear to sell some parts and consumables that are cheaper than other places. I've found oil/air/cabin filters etc. are cheaper than SCA/Repco etc.

For example:
OIL FILTER WCO17 WESFIL List Price $9.85 (For Toyota Corolla 2009-on)
OIL FILTER WCO82 WESFIL List Price $11.64 (For BMW X3 2009-on)

Above prices are before the $10 discount.

Free shipping over $50.

And don't forget the 6.4% cashback from Cashrewards.