Not always.
In EVE works only one kind of economy - the market economy, defined by supply and demand.
For example, let’s talk about T3 Cruisers after they was reengineered this summer. Loki and Proteus has the same Industry price in required components, but due to the new Loki’s combat abilities they became very effective in fleet PVP and got higher demand on markets. This turned into their prices Loki 220M ISK, Proteus 150M ISK.
During the Goonswarm Tribute Campaing, this summer, with hundred of Dreads they used hundred of Jackdaws and Confessors. This turned into their increased prices from 24M ISK to 100M ISK (now it cost around 50M ISK) due to constant supply and increased demand.
The drop chance on Sleeper components didn’t changed.
This Yoiul Event has rats which drops Augmented Drone BPC. Players want to make money on those Augmented Drones. This turned into increased price on Drone Capillary Fluid significantly by hundreds of %.
So, everybody doing those drone sites now.
I can confirm, that drop chance and drop quantity on those Drone Fluids didn’t changed last year.