The Merchants arrive at Level 10 and stand in the middle of the game area, touting their wares. They replaced the delivery truck as the place to buy Special Delivery Crates with Gems, but they also offer daily deals for Blueprints to use in the Design Studio, and Recipe Cards to use in the Academy. Note that you are not buying the actual dishes, so don’t expect them to turn up in your storage!
There is a limited number of each that you can buy, depending on how rare the item is. When you click on one of the items to purchase it will say “3 remaining” or “1 remaining”. Once you have bought all available items they will show as ‘sold out’ and you will need to wait for the next day for them to refresh. It can be expensive buying everything every day so try to target the blueprints you need for your VIP’s or the recipes you are closest to unlocking an upgrade for. Once you have bought all available items they will show as ‘sold out’