There is a factory that specializes in making this kind of skirt, which is more expensive because the fabric used is more expensive. Generally speaking, a basic wedding dress will consume about 10 meters of fabric, while ordinary clothes are up to two meters. Moreover, due to the high quality requirements of these fabrics, the price per meter is not cheap. In addition, there are many details using hand embroidery, beading and so on. The pursuit of meticulous beauty, so the overall price will be higher.
Of course, you said it was impossible without profit.
After that, it will be sold to the wedding dress shop at this price, so that they can recover the cost by renting it two or three times.
At present, the market price of the basic model I know is about 600- 1000, and the price is higher.
Online shopping is ok, but pay attention to quality and size.
I hope I can help you.