I regularly purchase on snap deal and received products with wonder full offers.
But today wasted my time by just looking at Sold out products!They do not have filter to exclude out of stock products and on the special days offer all the products are sold out.
Even the second when they say the product is available when click on it, it says the product is not available.
Please do not provide bad experience to user, at least do not fool customer or play with their feelings. by doing so you are fooling yourself.
God save e-commerce!