The time scale per batch for products, pures, honeycombs and scraps is the same with a factor of 2.5 from one tier to the next. E.g. 1 batch of Tier 3 Pure schematics takes 2.5 times longer for 1 batch of Tier 2 Pure schematics etc. (yes, I'm ignoring the difference in batch sizes).
Here I'd really would favor a lower factor like x1.5 or max. x2 between the tiers. These Pures+Products are still so massively used across production, that they seem overburdensome (time/quanta/management) in the now lifetime contribution to industry.
However, for Products there actually is a Tier 1 and thus creates a really high T5 copying time (T 4+5 Pures copying times are attrocious, too).
In addition, for Pures+Products, but not Honeycomb+Scrap (x2.5), the price scale is not linear and goes from e.g. 3.13, 3.33, 3.75 to as high as 5 (from T4 to T5) for products.
In my opinion Pures+Products schematics should also only have a factor of x2.5 as Honeycomb+Scraps. An exponential/growing price scale I'd only expect for Elements.
With all the Products+Pures a price finding (or just break even) for any element is not possible for any normal player since the game does not provide any tools or information. Sure, there may be specialists to code a tool or spreasheet outside the game, but I see those as exceptions and should not be required of a player.