If your item can already be found on other websites (like Allegro, eBay, online store, etc.) you can enter the URL in this field.
Providing additional information will make it easier to estimate the transportation cost. As a result you will get more precise quotes.
Clicktrans comes in handy when shopping online. You will know straightaway what the transportation costs will be, and when you have bought the item you will already have low-cost transportation quotes. It saves you time and money. Remember that listing an item on Clicktrans does not mean you have to accept any quotes from transport providers.