These are all fairly common terms for trading:
Please don't burn cdrs at any greater than 2x for quality reasons.
Package cds carefully with bubble wrap or use a box with padding to insure against damage in shipping.
All cds should include artwork unless otherwise agreed upon.
Cases should be sent with cds except for overseas trades.
Please e-mail when shipping & when you recieve cds.
Please test cdrs before shipping to check for errors (static,skipping,etc.)