Well, where to start.
First rule of Busse..............You don't talk about Busse...................
Just kidding. You can buy direct from Bussecombat.com
Ordering direct, you have only the options they are making at the time. They do limited runs. You order, and when the knife is done, they ship it to you. The knife is not sitting on a shelf, it is made. This takes some time, and is limited to the model or models they are making at the time.
Second option. Order from their dealer
bussecompanystore.com
This is run by another gentleman that gets shippments of knives that are already made. They are ready to ship, if in stock. Much quicker, but also, you are limited to the knives he has on hand.
(oh, his name is Skunk....................or at least that is what we call him).
Third option. You go to the subforum on here for selling Busse knives (where you can buy Busse, Swamprat and Scrap yard knives. All family knives, with the super warranty, made by the same "family" all wonderful, both knives and people
Swampratknives.com, Scrapyardknives.com
There are other options. They are trickier, and take more skill and knowledge.
There are events called "ganzas" around here.
Tons of knives are offered, you have to be here, to read what will be offered, at what prices, and send an email when the time comes (usually a set date, at a general time window, and the then the boss Busse will post a "go" and you scramble to send your email with your order.
Do your research when buying on the secondary market. You can get great deals, or you can get ripped off! There are sharks that buy up tons of the knives, at shows, and through other less desirable means, and will fleece you if you let them. They get banned here occasionally.
Knifehunter is a dealer on here that is one of the good guys. He typically has a few Busse up for sale at any given time.
You can also go to knife shows where they sell. Blade in Atlanta. Knob Creek in TX. There are tons of knives sold there, at good prices. You can make friends on here, and actually have some one pick you up something if you have a connection that is going (Proxy buying is great if you can get it).
Direct prices will typically be best. Aftermarket, the prices can go up. But, you can find deals if you know your prices, and jump! I have purchased several this way at a savings over direct prices. You just have to be in the right place at the right time to hog one up! (this is very satisfying).
Ebay has them, typically at ridiculous prices, but occasionally there is a gem that pops up, and sells way under value! It happens very rarely, but when it does, it is often spectacular.
DO NOT BUY on Ebay unless you know what the knives are worth, or are going for normally. Or you will pay too much!
Figure out what they go for on here, if you see on you like on the Bay, feel free to bid, but set your price at what is reasonable, then walk away.
I have never purchased through the Bay, because I buy either direct, or through other members here.
Stick around. You will find this a great bunch! Hope this helps (it was a great mystery for me for quite a while before I found this place. Actually what drew me to Bladeforums was Busse knives!)
The knives are great! Toughest knives you will find. Just plain fun, and great people who collect and share them!