Yep, turns out this game has a painfully idiotic repair system. Read this and lol:
Basically when you buy a plane, you have about 10 free repairs(exept the shitty starting planes). When you've played like 10 games with it,you have to pay moneh to repair it every single freaking battle if you dont have a "free repair" point. And the repaircost per battle are 3 times higher than what you win from battles. You get a free repair overtime, simply by NOT PLAYING THE GAME!
For normal and low tier planes 1 "free repair" is like 15min to 5 hours or so. For high tier planes the "free repair" point generating time is like 19 mothafucking days and playing one 15min battle without "free repair" with a high tier plane will get you instantly broke unless you bought craploads of credits for real money, cause the
free repairs dont stack. So you stuck with 1 "free repair" point per plane forever. So thats basically playing 1 15 minute game with an awesome plane and you have to wait half a month to play with it again.
I suppose this system sounded perfect on paper cause than you are forced to play with multible factions and many different planes and beginners dont get ganked, but its just pointless to play it continusly than. Cause levels, simply by playing for one nation, increase painfully slow. To even unlock and play with 1 single high tier plane takes months of serius playing. And high tier planes arent that OP compared to normal tier. But the nations dont have enough planes to keep you playin for hours without going broke. Cause its quite possible to run out of planes with just 15 minutes of playing. Than you have to do something else for 1 hour or so, till you can get back to the fight which you will play maybe 15minutes again. Shitty system, hope they fix it before beta ends.