Cheap hundreds, expensive thousands once, and then pay a fee for renting server space every year. See your technical requirements are not high. But the follow-up consultation and sales. . . . Ha ha. You'd better spend less money on website construction, and then recruit an online salesperson and a physical store salesperson respectively. . .
No one else's website construction company will give you advice and sales.
I suggest you open an online shop in Taobao, with the lowest cost, similar publicity effect and many small customers.
If you want to win big customers all over the country, you'd better spend more money and make a decent station.