There are two sites I frequent that have all kinds of gear that can be used for prepping. One is www.camofire.com, this is a site that posts all kinds of items for camping, hunting, survival gear and etc but deals only last 24 hrs hours and when its gone they repost another item. They always have different tactical items (knives, utensils, headlamps, clothing, etc) and they have a history that you can browse to give you and idea of what is available because chances are it will come around again. The other one is www.sportsmansguide.com which is also linked to their military surplus website and heck, need I say more. There is everything imaginable on those sites. Also I am in no way affiliated with these sites I have just personally had great experiences and they have bargain deals.