Flower Running

is flower running still worth doing? I can't afford neither private island nor suitcase, didn't join faction and didn't finish history courses?

Also, whom do I sell the flowers to? To traders? or on the market?

you still buy for much less then you sell it. Traders are the quickiest option. On the market I would not put it - bazaar should give the highest profit if you watch the prices.

You should calculate. Not sure about it, if you don't have an airstrip. It costs money to travel. With an airstrip and a large suitcase, I would make ~900k in 4 hours and I'm not sure if that was the best money/time trips, but I don;t pay for the travelling.

Edit.

Did some math. It's profitable. The profits are considerably low. Travelling for stingray plushies in cayman islands will make about 40-48k profit in 70 minutes. So if you can keep it up for a while, the sum can add up to half a million or so in a day.
The profit I calculated is on the market price of plushies at the moment and taken the flight charges for 5 items brought back.

If you could get to a company that has some benefits that's extra 10k from every item.

If you don't want to join a faction, I'd at least whore losses for a few days until you can afford a several day rental of a PI with an airstrip. From there, you can carry an extra 10 items - I think 4 or 5 items is the minimum, without faction/suitcase, so you could probably carry ~15 items. You can make three trips a day pretty easily to the UK or argentina, making ~50k per item, so you'd profit 3x15x50k = 2.25 million - rental/upkeep cost (call it 750k on the high end) = 1.5 million per day.

So in other words - yes, it's very worth it to travel, but you really need an island for it to start to pay off.

The Private Island you need will cost you around 400k and 500k a day, with flying you can earn a lot more. So yes, it's still worth it.