Haven't made it to the Webasto fitter this week but we have spoekn. It seems there's an additional car strengthening kit for fitting to the Panda - answering one of the questions that arose earlier - at a cost for the bits of 200 quid + VAT - so a complete fabric roof would be about 1500 all together. Have to think about that but not ruled out.
Is it a webasto item? If so I'll ask the guy who has been quoting me about it. Thanks