actually price rite is not even that cheap, ikea is far better quality though it's very price competive compared to price rite, DSC is the place for cheap and cheerful furniture, however, though it will do the job, it's not far from disposable quality, i believe that shenzhen will be be cheaper and most likely to be better quality than either pricerite and dsc, ( please also note that ricerite and dsc both source their products from guaugdong factories)
The real problem is that the logistical cost of delivery from shenzhen to hk may be very expensive due to the border crossing, after all furniture is not exactly the most easist items to be carried on the mtr from huanggong or lowu, unlike the majority of traded items such as phones, computers, cheap electronics, which passes through mtr by mainland couriers, as well as milk powder going the other way