A product could be listed at different prices. There could be suppliers offering you the same product but at a different price. Don't order a cheaper product, just because the price is cheaper. Sometimes supplier just gives a lower price to attract more visitor to his link, but then actually the product is not in stock.
Please consider these points to choose the best product.
1) Monthly Sales and Reviews: First check the monthly sales and the number of reviews of a product. The products which have more monthly sales and reviews, that product will be better, as it has a good demand in China.
2) Product Rating: Then go a little bit down of the page, you can see the product rating. If the product or supplier rating is below 5, then we will suggest not to order that product. You can find a similar product from another supplier.
If you follow these guidelines, hopefully, you can order the best product from Shadmart.