I had a bad experience with Cutting Edge Knives. I ordered two advertised knives from their site. I was informed one of the knives wasn't available, even though it was advertised. Because of the high cost of postage for one knife, I canceled the order. One knife with their postage cost was too expensive; postage is less with more items; I wouldn't buy one knife from them. I was told that I would be charged 30% of the knife that they did have in stock, as a restocking fee, and that this was explained in their terms and conditions (they were pretty officious). I went and read their terms and conditions, and restocking fee was for returned items - but nothing had been sent. I pointed this out to them, and they insisted on the 30% charge despite nothing being sent.
Good businesses I have found
https://www.globalgear.com.au,
https://gocommando.com.au and
http://knivesonline.com.auI just bought two knives from global gear. If you become a member (it's free) you get a 10% discount and free delivery. Their prices were good to start with. I'd try them first
Also, fasttech and gearbest are surprisingly good. Slow delivery. I had a broken knife arrive from Fasttech, sent them photos and they refunded me. These two don't have brands like becker though.
An update 18/4/19. Those 2 knives I bought from globalgear both had dodgy sheaths; knife wouldn't come out of one, the other one was very loose. I returned them and got a full refund. It's good to know what a business will do when things go wrong! So, I recommend them. Their pricing seems to be on the two extremes, outrageously expensive with the occasional great deal - so know your prices, and also factor in the 10% discount (for members).
The other store I bought from is
http://www.jpt-australia.com/knives_main.htm. It's a one man operation and a nice bloke. This store is related to gocommando, but different staff.