Ive just bought one, two week ago-ish for 48 pound inc delivery. Found on the net, company called waxacar. To be honest the name came as a surprise to me as i thought i had bought from the manufacturers, very convincing web page. It was only the email confirmation that threw me! Anyhow they were cheaper than the manufacturer prices in the end, and despite scaring me with the small print after further inspection, that delivery could be within 28 days, the filter was with me within 3 days. It just so happened they weren't a million miles away from me either, so i did pop in, as a result of my concerns, but the part had already been despatched. Words from waxacar themselves, this particular panel filter is usually overstocked due to popularity, but other models could very well take time to arrive.