Yes. I understand.

It always amazes me when someone wants to buy two or three of my "add-on" items which are $2 - $5, and then they ask for a discount. And I always think, "you're spending $4 . . . how much of a discount do you think I can realistically give you?". I sell these items because they go with my main items; I cover costs plus a very small profit.

I've also had problems in the past when I've discounted stock to clear it out.

The item is really cheap, but the postage is the same price (and therefore seems more expensive), and then I get dinged on my postage DSR.

So now I just discount items, put the postage in the item price and use free postage. I'm not a fan of free postage because 1. I prefer to be upfront about what the postage cost really is and 2. there is no way to discount an invoice with free postage, so if the buyer buys multiple items, they're paying postage more than once, but zzz.

I work in retail and people always ask for more discounts when we have large sales, than when items are full price.