Sadly to see what happened in just some months of being away from gaia online, sadly the turn of events had made the casual grind for gold turned into some sort of hardcore grind financial game, where you have to develop a very refined mastery on trading to keep it up just to get a single piece of item you wanted to collect before
Gaia just made a perfect chance for free players and casual players to quit the game by kicking the economy in the groin
sterek
However, you need to remember that buying all the listings for one item only to re-list them at a higher price is very frowned upon--and pretty ineffective, since the Marketplace still displays an average price based on sold listings.
At this moment i cant care less if it is frowned upon, i will do whatever i have to as long as it is not illegal, to put it in other way, some months ago i was questing for full Samurai Yoroi that at that moment was around 25k each (it was just something that you could get by grinding zOMG some hours daily) and now it is at 380M each, nobody can grind that much at the moment, so i am left with very few options
1st, grind as much as i can the events to get stuff and wait almost a year or two for the prices to increase
2nd, loot really cheap event items in marketplace and wait a few months for the price to increase drastically
3rd, like 1st option but spamming alt accounts along the way for 1 time items, but i think this might be illegal or will be illegal soon
Note that i did not added any option that included GC since, at least for me, in the currency of my country, buying 5 dollars would cost as much as buying 500 dollars and there is no actual free offers available on my country
TL;DR: Gaia left an sink or swim situation for non-cash players so i am forced play rough to not ragequit
Edit: It is impresive that now to fully play the events you to use gold for extra features and it looks like on this one in halloween you have to even use gaia cash, i dont know where this is exactly going, since this will hurt badly both parts, newbies cant afrod to play the mini game events to the fullest ergo reducing the amounts of rare free items that they can get, in the other hand this makes cash players to charge more cash to play the minigames
I personally have not seen something like this, ever, it is the first time you have to actually starting to think about getting a job at grinding events to get something to start with