Here's a link to the one i purchased the seller is in England.It...

Here's a link to the one i purchased the seller is in England.It worked out to Just under $59 AUD
If you can find something Online At that price let me know.I searched local and other websites,saved quite a bit
I had to trim it down to fit my flue brush size reduced to fit my 150mm flue.The sound of the brush going down the flue you could tell it was getting a wicked cleaning.
With the chain method there is a chance to pit the metal,which would lead to problems?
http://www.ebay.com.au/itm/130761410535?_trksid=p2060353.m2749.l2649&ssPageName=STRK:MEBIDX:IT
PS. you don't want a metal brush for a metal flue.