There isn’t a way to make the Ambot cost less for the Orlocks at the moment save either making a new custom hanger-on, or refunding yourself the difference when you purchase the Ambot. This won’t be of any use when it comes to calculating crew size though, so the most proper way would be to create it using the tools.
To do this, go to the customise section of the Underhive tools. Create a new fighter and give it the hanger-on type. Copy the stats over, set its price, set equip cost to ‘no’ and set skills to 1, then click done to finish this profile off.
In your main settings, turn equipment and skill restrictions to ‘off’.
When you hire the Ambot, you’ll have to give it its equipment manually and allocate its infiltrate skill using the 1 free skill slot you set up in its profile.
@Derf One slight amendment to my steps, perhaps changing the equip cost to yes might be better, I think the Ambots basic gear is costed at 0cr anyway, but if you want the upgrades it won’t alter the cost if equip cost is no, so having it at yes might be more appropriate.
Edit- you can make changes to your custom profiles buy clicking the edit button at the end of the profile, it’s a little pencil