I'm not sure I buy into that conspiracy theory
She didn't buy into the hype surrounding the new product
He's trying to get investors to buy into his business plan
Do you really buy into the idea that aliens built the pyramids?
Many people are hesitant to buy into online investment schemes
Hey, have you heard about that new plant-based meat alternative?
Yeah, I saw an ad. It looked pretty good, but I'm not sure I quite buy into the whole "it tastes exactly like meat" thing.
That's fair! What would it take for you to *buy into* the idea that it could be a viable substitute for your usual burger?
I'm not sure I completely buy into his investment strategy
I'm hesitant to fully accept his investment strategy
I don't completely believe in his investment strategy
I'm not convinced by his investment strategy
I'm skeptical of his investment strategy