купиться, проглотить(Yeldar Azanbayev); вкладываться(в экономику, компанию и т.д. bookworm); проглотить(Yeldar Azanbayev); закупать(olga garkovik); вносить денежные средства в уставные капиталы(1. to buy shares in a company, especially in order to gain some control over it 2. (informal) to believe something, especially an idea that many other people believe in She had never bought into the idea that to be attractive you have to be thin. OALD Alexander Demidov); принимать("Obviously, not knowing the future is always difficult. But this group of guys has been great to coach because they've never made me feel like a substitute teacher. Everything we've asked them to do, they've bought into," Bickerstaff said. VLZ_58); верить(He wants to continue the fight, and people close to the President have even expressed concern that he is buying into Giuliani's false claims that his legal efforts can change the election's outcome.cnn.comMr. Wolf); верить(в какую-то идею • I never bought into this idea that you have to be thin to be attractivevogeler); купиться на(scherfas); поверить(buy into something, phrasal verb 1. informal to accept that an idea is right and allow it to influence you: I never bought into this idea that you have to be thin to be attractive. 2. to buy part of a business or organization, especially because you want to control it: Investors were invited to buy into state-owned enterprises. LDOCE Alexander Demidov)
входить в(напр., в неформальном биржевом обороте, означающем "покупать ценные бумаги" • buy into the Triple A paper – входить в бумагу с рейтингом "ААА"Alex_Odeychuk)