Thank you for clarifying that. I don't understand how they reach that conclusion, but surely it must have a detrimental impact on their postage DSR's

I am sure it does and rightly so, if sellers think it is acceptable to make a buyer wait for however long their bank takes to clear the payment then they deserve to get their DSR trashed.

I don't worry about my DSRs unless they get down to below the ebay average and touch wood they have never done so. I don't even look at them more than once a month so I don't have to even think about them.