While the opening of a new Coles supermarket in Alderley may be convenient news for locals, the centre comes with serious parking restrictions.

Customers can park free for two hours at the Alderley Coles and Liquorland, but any stay over that time limit will cost shoppers a whopping $77, according to signage at the centre.

Coles Alderley store manager James Felsman said the parking limit and $77 fee was put in place to deter commuters from parking there and catching the train to the city, as the parking is for Coles customers.

The Coles centre has about 220 parking spaces and is directly across the road from the Alderley train station, which has 86 parking spaces.