Originally Posted by ottopottomouse

As much as you think you can ask for without them thinking you're being cheeky.

Depends on all sorts of things. How many they are going to buy each time, how long they will buy them for, whether they will expect you to give them 90 days credit, whether they are going to attempt to return unsold/damaged-by-them stock to you that you won't be able to shift yourself, is delivery in your price, and if their purchasing manager is a fit bird.