To sell items in the Pharmacy:

1. Tap on you Pharmacy to go inside and open the Pharmacy window

2. Tap on an empty sales slot (with “NEW SALE” over it) to open your inventory window

3. Amongst the two tabs on the left side of the window choose if you want to sell items from your Storage or Tank

4. Tap on an item you want to sell from the list in the middle (below the current Storage/Tank capacity meter)

5. Customize your sale on the right hand side (select amount of the item you selected and the price)

6. Underneath the amount and price setting you will see an ADVERTISE button. Make sure it’s enabled for other players to see your offer in the BUY GOODS window

To buy items from other Pharmacies:

1. Tap on you Pharmacy to go inside and open the Pharmacy window

2. Tap the "BUY GOODS" button - the BUY GOODS list will open

3. Select an offer you are interested and tap on it

4. You will be taken to the sellers Pharmacy. Tap on the offers you want to buy