Hmm, interesting. The Saleroom accepted a DC from me over the phone last August.
Not sure what they mean by "not secure". In what precise way not secure? I wonder.
I can pay by credit transfer, but only £500 at a time, as my account is not a business one. So for more expensive purchases, I have to split the payments, and send several lots of £500 plus a balancing amount, which is an inconvenience, though jnot an insurmountable obstacle.
Could send a cheque, but that's a bit of a long winded process when you're eagerly awaiting your purchase. I've only used 9 cheques since 2006, when my last cheque book started.