Where can I buy and for how much, is a filter part no.30405180H?

You're a bit lazy - it's not as if spare parts for domestic appliances are difficult to get hold of.

Try searching using something like Google or Yahoo for online spares suppliers - e-spares are a well-known supplier - I buy my bags from dustbag.co.uk... they include filters with the order.

As for cost - your chosen supplier will tell you - postage will be extra.

You might also be able to create your own filter from suitable material lying around at home - or wash out the one you have.

Good Luck...
February 2017