At the beginning of the game, whenever I saw a Blupee and shot it with my Bokoblin bow, I recall that it would drop a couple of low-value rupees (green and blue, mostly). Now that I've played for a bit, I'm using a Savage Lynel Bow that does 40 damage per arrow - nearly 4 times the damage of my beginner bows. I've also noticed that the Rupee drops from the Blupees seem higher - now I get blues, reds, and even purples sometimes.
Does a higher damage bow make the Blupees drop more Rupees, or is this just confirmation bias on my part? Or perhaps they simply drop more Rupees as the game progresses?