They ask you for your receipt, because they have had many unscrupulous people, buy a product from one store, and try to return it to their store. They may seem suspicious to me and you, but they deal with suppliers that force them to do business that way. They have had people trying to return products that they do not even carry. The owner is a licensed Cannabis patient and grower since 2005, who gives discounts to other licensed patients, and is educated in Horticulture from the local college. They try to try all products first before carrying the product. When someone is insistent on purchasing a product that they know does not do what it says that it supposed to do, they will try to steer you away from it, but the ultimate decision is up to the customer. They are located on the Six Nations Reservations, in the tax free zone. They have been in business since 1993, and have helped me out immensely many times, when I was banging my head against the wall trying to figure out what my problem was. They have expanded their product line into smoking and extraction accessories, and offer the best prices around, for quality products(remember they try to try all products out first). No business can stay open that long without being good to the customer. I would recommend this store easily without a moments hesitation.