I have a friend who is running hawker.

You will need to bid for a stall from NEA I think to get a slot. This bid price will be your rental price. So bid carefully.

Setup wise will cost some money. You need to engage someone, preferable from an agency to manage it. Usually graphic design on the store, menu design and equipment fees. Equipments will be the bulk of the costing.

Graphic design can be a simple one time. That one just hire online from Envato services freelancer or DIY. Cheaper than agency!

Usually people take loan and then pay over time. Equipments needed will be dependent on what you want to sell.

So must plan ahead.