Błędnie: It was borne in for me that the prototype’s costs have rocketed sky-high. Poprawnie: It was borne in on me that the prototype’s costs have rocketed sky-high.
Zwrot ‘be borne in on sb.’ to idiom; znaczy on „zdać sobie sprawę”, np. ‘It was borne in on me how difficult it was’ („Zdałem sobie sprawę, jakie to trudne”).