Perhaps other countries or look in Martial Arts magazines. Most places they are not legal for sale so is tough, but they are out there.
On the benchmade website
No you can't find any butterfly knife cuz having a butterfly knife in Hong Kong was illegal.
Tijuana
yes u can buy a butterfly knife if your in another country they will let you bring it back i would know because i own 3 butterfly knifes
Butterfly knives are banned in Australia due to their classification as a prohibited weapon. Therefore, it is illegal to buy or own a butterfly knife styled pen in Australia.
You dont need a permit, just buy one...
'Extremely Sharp" and "Cold Steel" have nice websites for online shopping.
Butterfly knives are considered a switchblade under Texas law. A switchblade is a prohibited weapon, meaning that they are illegal to possess. Even if a company will mail you the knife, you can be prosecuted if you are caught with it.
Prices for a good quality knife start from $200-$300. Don't waste your time and money on "custom knives" from Pakistan or India, because they are usually advertised on the Internet as a "custom Damascus knife". You can see such an offer for a price of $60-$100. It's better to buy a knife from a local knife maker. You can can visit Benchmade and and Agrussell. If you want to buy an exclusive knife without restrictions in your budget, then you should also consider Noblie, FarinaFineArts and ExquisiteKnives.
You can choose the best online portal like balisong, Men's Personal Effects and USA Knife Shop etc
Blade play is a great place online to buy butterfly knives they have good butterfly knives for a good price that's where i buy my knives i love them they have fast free shipping too just go to Bladeplay.com
It depends on the knife you buy. Some brands have terrible cheap knives, but the more expensive ones are amazing. It depends on the price range and what you are looking for (action, style, blade, ect.)