This 'glitch' is a permanent feature of the ebay landscape.
If you have any form of price promotion in operation a buyer simply can't
'Request Total'.
The only workaround is to establish exactly which items your buyer is after,
calculate the postage and create a tempory postage promotion.
Example:
The 2 or 3 items can be sent for $15.00
Create a postage promotion where 2 or more items will be charged $15.00
When the buyer places the required number in the cart using 'Add to cart'
the postage will display as $15.00
As I said, make sure it's temporary and impress apon the buyer that they
should act quickly. You don't want this workaround going against you.
There appears no good reason for ebay blocking combined postage
on promoted items.
