So now that round 1 is over, let me suggest another way you could go about this.
If you’ve got this code already integrated in the marketplace site and e-commerce, there’s another thing you could do. Turn it into more of a bundle shop. Rather than having players compete against each other on their conspicuous consumption and FOMO, you could bring the playerbase more together with common goals.
You could even do it with the same kinds of things you offered. Let’s take as an example the Year of the Dragon frame, and let’s say it WAS player-created. So you’d want to pay that creator back about 150 GJN, so say you set a collective price on the frame of… say 1000 GJN, and set the increments at 0.50 GJN, but you can give as much as you want to hit that goal. No time limit, or a very extended one: whenever collectively all the GJN bidded gets to 1000, EVERYONE gets the frame. Lift the anonymity so the top three players who gave the most are recognized and maybe even thanked by community members. For the skins, I figure you could have got 2500 GJN, with bids increments of 0.50 GJN, and given the creator 750 or so, and still made some nice money, increased the demand for GJN, and no one would have complained.
Don’t like that? Ok, then do it a slightly different way. Instead of a cap on lots, set the rules so that once you hit 1000 GJN collectively, everyone who contributed (at 0.50 or more) gets the thing. But only if they contribute and only once the cap is met by everybody. Here you could have more of a ticking clock. If people wanted to speed it up they could always increase (but not decrease) their bid to hurry things along. If people want in at the end when it’s close and you got way over the 1000 or 2500 GJN, well, that’s just profit to Gaijin then.
You could even start working in charity ideas with this. Announce for this “auction” item if it hits a cap will donate 1000 $/euro to a war charity or what have you.
War Thunder as a game is progressively atomizing its player base. Squadrons are just vehicle getting apparatuses, collective play and goofing around with friends is discouraged by the event structure… You’ve got an opportunity here to focus the community on common goals that are done together, while still making more money from GJN sales, and paying creators: you could absolutely take this same space on the marketplace site, retool it along one of the lines above, and make money without any real player complaints (other than consoles, of course). Maybe think it over.