It looks like I have exactly this problem:
The “Patent Scrutinizer Deluxe!” used for Option 1 is 320 Echoes. I already have the Patient Scrutinizer used for Option 2.
I don’t have a reliable revenue source. (maybe if I’m sharp, I can think of one!) However, the game tells me another player can produce the item I am looking for if I don’t want to spend the described amount of money.
Does any of you want to flit in and help me?
Here, if you desire that, is my profile: Fallen London