knife pretty much goes for 1 ref now, you can think that to valve re-releasing in a new crate
I do not see the valve going up for a long time
but if you want my advice buys keys and lots of them, then go on an unboxing spree trying to get unusuals, then sell them off for cash/ or promos then sell those for cash, most people dont like doing this because its just gambling, I just saw over the weekend on an unusual server unbox 350 crates and only get a cancer unusual
you usually make your money back and make a nice little profit assuming you dont get cancer unusuals
another thing is doing favors for people (using their sign up like for drop box, league of legends referrals, ect...) they usually pay well
beta's, beta keys or tradable copies, you can make a nice profit trading them to people, and all you have to do is keep an eye out and sign up for it when they start, like I sold Counter Strike Global Offensive beta for earbuds + 4 keys
new items, take advantage of new item hype and sell them quick for a nice profit, dont sit around with it thinking they will go up, people will pay big to be some of the first people to have them, this includes new stranges, hats, misc items, and even weapons
get a few accounts, upgrade them to premium and run an idle script on them, you will get at least 8 drops a week and sometimes hats, or other high value items, trade everything back to your main and scrap whatever low tier weapons and sell off anything valuable
look around spuf for good deals, things you can make a profit on
for example: http://forums.steamgames.com/forums/showthread.php?t=2668661
basically I traded 0.33 ref for 3.33-4 ref
crafting hats, rebuilding items
turn that 3 ref or 2 unwanted hats into a new hat, gambling, you might get a bad hat, or a wanted hat or misc
see those 3 hatless hats mentioned above? I crated 2 of them and get the texas half-pants http://steamcommunity.com/id/xJoe88x/screenshot/540673906620512887 worth over 6 keys right now (very lucky craft) sold the other hat for 1.33 ref
so in total within 1 hour I made almost 7 keys (keys @ 2.55 ref each) in profit for a 1 rec investment (and a 1.11 ref gamble on the hat crafting)
thats how you make profit
