What's Your Experience With a Marketing Funnel?

In indiginal marketing trainings, they call it a trip wire. When you buy a low priced product from someone, then the system that they've designed now says, oh, we've got a prey. We've got an enemy. I like directness and transparency. If you're going to sell me something, sell it to me. Don't beat around the bush and say it's a free thing, bababla, all this b s just sell me the damned thing. And if i want your thing, i will buy your damned thing. You don't need to persuade me. Just like if you want my thing, i'don't have to try to strong arm