hi
the price of gold ore was 39 and then I bought 160 ores and the price jumped to 51 per ore. Then price went down to 41 and bought 60 ores again and  the price jumped to 61 per ore. This is not normal. You said slight change of price (this is slight for you).
Blueprints are useless because of high prices. I dont want to jump to other sectors just to buy ores.
I would rather have cooldowns than this. Are you planning this to stay