Nothing to do with it? So they are not defrauding the tax man in any way then?
What about insurance, in some cases you would need a receipt to prove the value of the goods - yet the receipt will show a cheaper price than the true value.
There are a number of issues and as I said before it cant be justified.
Sorry about my rants been a long few weeks (back on the old 19 hour day) and am knackered and Ebay in my opinion has too many conmen on there.
Need early night tonight.