http://dhost.info/nephadral/ShipBuilder.htmlthank jack juke or whatever his name is for this. It's a premade formula on what to build for certain costs.
Typically what you want is your next ship to be 1.2-1.7 the size of the ship before it. I typically do 1.4 for my own personal line (if you have a gold account look up "Borg //" without the quotations)
EXAMPLE LINE
3. 3rd ship you bought 1.950.000 (rounded to look nice)
2. 2nd ship you bought 1.400.000
1. first ship you bought 1.000.000
this is using my 1.4x the previous ship.
Hope this helps, and Saturn you are so right.