Your monthly BoneBox subscription will include one Skulls Unlimited skull and one osteological item (i.e. bacula, claw, feather...) a total retail value worth over the monthly rate you pay. *Skulls range in size from palm of your hand to thumb size. You can expect common species (ie mammals, reptiles, birds...) with the occasional less common specimen. How can Skulls offer this low rate? Our inventory purchasing is opportunity-based. Many times we have to purchase in big lots to secure certain specimens. This is why we can offer deep discounts to our monthly subscribers. How do I cancel my subscription? Subscriptions can be canceled at any time. Cancellations must be received by the first day of the month (four days before it ships). When will I receive my monthly BoneBox? Your BoneBox will ship out the first full week of every month. *Holidays may delay shipping* We ship all boxes at once, due to this, you may see your shipment sit in the "Pre-shipping" phase for up to a week. This is normal, once the packages are picked up by USPS you will see movement on your tracking number.