Trade Up Contract : StatTrak™ AWP | Hyper Beast (Minimal Wear)

50/50 chance to obtain the  StatTrak™ AWP | Hyper Beast (Minimal Wear). Even though the trade up is a 50/50 chance, it is 100% profit.
Two possible outcomes of the Trade Up Contract:

• StatTrak™ AWP | Hyper Beast (Minimal Wear)
• StatTrak™ AK-47 | Aquamarine Revenge (Minimal Wear)

You will require 10x StatTrak™ MP7 | Nemesis

The initial cost of the 10x StatTrak™ MP7 | Nemesis is ~$90USD. Both items from the trade up contract are profitable. Profit ranges between $20USD and $50USD. Both trade up contract item have a 0 to 1 float condition. 

OPSkins : https://opskins.com/?loc=home

Resell :StatTrak™ AK-47 | Vulcan

The AK-47 | Vulcan is always in high demand. A quick way to make easy profit is to resell the StatTrak™ AK-47 | Vulcan (Minimal Wear).

The initial cost of the skin is $163USD, but you are able to resell it on the steam market for ~$230-$240USD.

After steam taxes, if you were to sell at $230USD, you would have made ~$40USD.

You can take it one step further and turn that into real money. To do this you would want to find probably 2-3 items which hold it value in the steam market and OPSkins. Hence, if you were to purchase 2 items at $100USD each and resell on OPSkins for $100USD each. You would make $90USD from each transaction which equates to $180USD. So you could make roughly a $15+USD real money profit or a $35+USD steam profit. 

OPSkins : https://opskins.com/?loc=home

Steam : http://steamcommunity.com/market/