I have the opposite problem, which is equally frustrating. My (auction) items, when packaged, come in at just over 100g (most of that is protective packaging rather than the item itself). This puts the postage rate at £2.74 which is for a package of weight/dimensions 100g-1kg. This is absolutely fine for ONE item, and the customer pays for, and I duly receive, a label for a package up to 1kg.
However, what Ebay's A.I. cannot compute, and only human (i.e. seller) intervention would be able to ascertain is, that if a bidder wins say 12 items, ALL of those would still fit into the same package, and STILL be within the 100g-1kg size/weight limit. Instead the A.I. simply calculates that 12 items = up to 12kg in size/weight, and charges the poor winning bidder accordingly. I'm then sent a postage label for a package weighing up to 12kg!
The buyers are unhappy because they're forced to pay excess postage for a package that should only cost £2.74 (and WOULD only cost them that if I, as a seller, was able to invoice them for actual costs of postage as I've been able to do in the past). Many buyers still don't realise or accept that the postage that they pay no longer gets sent on to the seller, but is calculated by, and retained by Ebay themselves, and that just makes me appear like a greedy seller who's over-charging customers for their postage!
Taking away the ability for a human being to calculate/weigh/charge postage accordingly is bad for both sellers and buyers. I cannot understand why Ebay won't take this issue on board and revert to the option of allowing sellers to 'combine postages' and edit the postage charges for their buyers.
