I've been collecting for about 15 yrs. mainly german pre ww1 to ww2 + british and commonwealth bayonets from different era's.But I've expanded my collection to include US,french + newer surplus bayonets such as the ak's if price is right.There's a limited amount of bayonets for us to collect from compared to the vast quantities in the States.I go to the local auctions + I usually get out bid by antique dealers for the common one's such as British ww2 spike bayonet's there willing to pay $30 each,I can go to gun show + buy for $10 - 15.I also buy from online auctions as long as there's good pic's,I keep an eye on exchange + shipping charges.In a couple of month's there should be alot of new Chinese ak bayonets coming in with the rifle's and see what price's are + buy a few if they are reasonable not the $100 plus people are asking for the few already here.