This could have already been suggested (just lock it then)
Anyway, I think that the luckily islands kits are very unbalanced... The diamond kit is the most op kit, you can make a diamond sword and diamond leggings! While the most expensive (I think it's the 'wizard' kit, ill re-check it later) gives you only a random wand, which is most of the time very bad. Yes, i know it's about luck in this gamemode, but such a big dis- / advantage doesn't seem fair to me. Also the prices don't really make sense! The bomber kit is also very useless without redstone! Although I like the game very much - It's fun to combine pvp and luck - I do still think that the lucky islands kits need more balance!