I paid cash. In fact, it took a bit of persuading and waiting to get a paper receipt, but to be fair to the lady on the desk she was perfectly pleasant and helpful - no problem with her, just the policy she's being asked to front.
Actually it would. Stating £410 including delivery (and admin charge if you must) would be more open and honest and would rile me a lot less than being quoted £405 and then being told there are additional charges, some of which didn't exist 12 months ago.