Farm of pure experience is very profitable proposal for ones who have permanent camouflages (including non-premium high tier ships) and unique economic signals. The price is set for 1000 experience taling into account premium account, but doesn't taking into accoun all other modificators for experience. So, for 1000 pure experience with maximum consumable use you could recieve 4000 ship experience, 2800 free experience, 10000 captiain/elite experience and 250k+ credits.
You also will receive:
Attention: You can check current amount of pure experience earned on your account in your in-game profile, in left bottom corner (for any specific ship of for all ships)