sales pitch

myyntipuhe remark Remarks or demonstrations intended to persuade a consumer to make a purchase, especially when vigorously delivered or exaggerated.
1947, "http://www.time.com/time/magazine/article/0,9171,933667,00.html How Many Listeners?," Time, 19 May:

As far as he is concerned, it is just a huckster's sales pitch.

He was so convinced by the sales pitch that he put around $1 million of his own money into the funds.