請問點將個廣告寫得吸引d?寫得好d~~thx

Dear Reader,

If you don't buy our air purifier immediately, you must be crazy. Our is the best on the market, it is a well-known fact.
Hong Kong's air is very polluted. Whenever you go outside, pollutants in the air get into your lungs and they can seriously damage your health. So why should you continue abusing your lungs at work?
Modern Hong Kong offices have windows which cannot be opened, and offices are air-conditioned all year long. Just because the air is cold does not mean it is fresh! In fact, with every breath you are inhaling air which is constantly being recycled - old air. If the air-conditioners in your office are not 100% clean, they will also be blowing spores and bacteria into the air you breathe. Do you wonder why you get sick so much? As if that wasn't enough, if you work with smokers, the quality of the air share will be very greatly reduced.
Our air-purifier will rid your office of dust, bacteria, spores and smoke. It will also generate negative ions, which are good for your health and well-being. We are selling this top-of-the-range machine for only $2,999; delivery anywhere in Hong Kong is $300 extra. A fully detailed instruction manual comes with the machine.
So buy now, and save your lungs from doom!

請各位高手可以幫忙將呢段英文廣告改得生動d,吸引d,寫得好d!thx!!