The Sample Department works separately from Print Production so it would difficult to ensure that your sample pack would make it into your final shipped print job. Also, depending on what your printed order was, it is very possible that the sample pack wouldn't fit in the box as well. For example, 1000 business cards fit into their own custom-sized box and there would be no room in the box to add the sample pack. With that said the fastest way to receive your free sample pack would be to fill out this online form which would go straight to our Sample Department and ensure that your samples ship within 1-2 business days. Our sample packs of course also come with free USPS shipping. Click here to order a free sample pack https://www.4over4.com/free-samples