I have been selling beads and findings. I always use the 100g padded envelope £1.55 option. for some of my items I am being forced to post for £2.74. There is no advanced option available.
My current item is for £6 (jewellery making chains)
The postage options are Large letter £2.74, small parcel and large parcel.
I 've tried talking to the auto agent which is worse than useless. Any help would be appreciated.