Ross Houllis, 28, was allegedly assaulted by two men and dragged through the car park of the Wakeley Shopping Centre

A young man has been bashed to death after he was allegedly ambushed while trying to sell Apple AirPod earphones he had listed on Facebook.

Ross Houllis, 28, was allegedly assaulted by two men and dragged through the car park of the Wakeley Shopping Centre near Fairfield in western Sydney's at 9pm on Friday.

After the alleged assailants drove away in a Toyota Hilux, Mr Houllis was rushed to hospital in a critical condition, where he died on Monday.

Sami Hamdach, 27, was arrested on Saturday and charged with murder at Bankstown Local Court on Thursday.

Mr Houllis listed the Apple wireless earphones for sale on the Sydney Marketplace Facebook group on January 23.

'Brand New Airpods generation 2 haven't been used got them as a gift a while back,' he captioned the post.

Apple AirPods sell for $250 at retail but Mr Houllis had listed them for $170.

The popular group has more than 20,000 members who buy and sell items and often arrange face to face meetups to save on delivery costs.

Hamdach and another man, who is yet to be arrested, allegedly arranged to meet Houllis to buy his Apple AirPods.

Mr Houllis listed the Apple wireless earphones for sale on the Sydney Marketplace Facebook group on January 23. Sami Hamdach, 27, and another man, who is yet to be arrested, allegedly arranged to meet Houllis to buy his Apple AirPods before assaulting him

Police allege the pair approached Mr Houllis and demanded cash before they knocked him to the ground and 'seriously assaulted' him before driving away.

Witnesses called an ambulance for Mr Houllis, who was rushed to hospital with 'critical head injuries'.

NSW Police's Tactical Operation Unit seized a Toyota Hilux as they executed at a unit on Marion Street in Bankstown on Saturday.

Later in the afternoon, police arrested Hamdach and charged him with cause grievous bodily harm to person with intent.

But since Mr Houllis died of his injuries in hospital on Monday, Hamdach's charge was upgraded to murder on Thursday.