Well, if you put it on the have side the website does this on itself (however you still cant search for specifc kits/fabs), i thought you are talking about the want side, there its not possible.

You dont, the site doesnt support it yet. And before you ask, yes, its on their TODO list, for almost 2 years now.

There is no cancel button because you didnt sign up for premium, your free premium comes from a previous donation and this wont, like the message you quoted says, extend by itself, therefor no cancel button.

They do, soon there will be a bunch of more new items you can spend your money on :-P.

You currently own two items that you can trade, a frying pan and an ellis cap. Everything else cannot be traded because you dont have premium in tf2.
This is not a limitation of this website or any other one but imposed by valve. Basically you cannot trade anything that dropped for free as long as you dont have premium.

The rule doesnt say 10% price reduction, it says 10% of the total price, using your words thats 90% profit isnt allowed.

Otherwise 80% of the outpost users would have a serious problem, you call 30-40% quicksell? Well, for them qs starts at 60% at least :-P. Also especially for unusuals, bp.tf price != price of item.

You know, you can join the MvM matchmaking alone, the system will put you in a team by itself. Although the quality of such a team of randoms varies a lot i assume it will have better players than players you might find by asking in random groups that are in no way related to MvM at all (hint: like this one here).

Read the rules about Backseat Moderating.

We all know trolls too

There are sites dedicated to bot trading, just use these instead. They also offer better features for that like exact listing of prices. Outpost is the home of user trading, the home of buying everything for at most 50% of its value and 1.3 ref on left side and buying all craft hats for 1 ref in notes :-D.

In its current state outpost should stay for users and not clutter up even more with useless bots just fake advertising wrong prices to attract more attention.