For the next 7 days, one lucky winner for each day will have a chance to win in-game items of their choice and an $89.99 Sandboxr coupon!
You can read more about it here.
In addition, the Reticulated Cryo, Tectonic Acro, Ashfall Acro, Golden Oviraptor, Crowned Raptor Pack and Beer Helmet are 50% off! Even better- the Christmas Gifts are 25% off.