Add the items you wish to purchase to the cart and use the "Copy" button in the cart to generate a message for the appropriate channel logging purposes.
You may only purchase items if you currently have the funds to spend for on your tracking sheet and the expense needs to be logged there without unnecessary delay.
Mundane items are a subject of the #mundane-item-shopping log and can be logged directly by you.
Magic items are a subject of the #magic-item-shopping log and have to go through a DM in whose session they were bought.
You may only purchase items of your character's tier (or bellow) for that character.
A DM may choose to impose an additional fee to your purchase, but it can never be made cheaper.