How do I get the Rosin Press?

One of the new RV clients, Christiana has the Rosin Press for sale. Keep an eye out for her from level 28 where it will be unlocked and available for purchase. Just click on her at the door, look for the item in the bottom left of the deal screen, click and follow instructions to purchase. If you wish to purchase it ahead of level 28, you can make an in-app purchase.