In brief, we are inclined to go along with someone’s suggestion if we think that person is a credible expert (authority), if we regard him or her as a trusted friend (liking), if we feel we owe them one (reciprocity), or if doing so will be consistent with our beliefs or prior commitments (consistency). We are also inclined to make choices that we think are popular (consensus [social proof]), and that will net us a scarce commodity (scarcity).
There are literally thousands of plugins available that help extend the functionality of WordPress. Your website will depend on several plugins, depending on what you need done. Having too many plugins, of course,is not a good idea since it can slow your website down. Also, too many plugins is a management headache along with the risk of not being compatible with the latest versions of WordPress.
HelpScout starts their funnel with traffic. They have their blog and resource page that helps keep you clicking around their website. They make it very easy to see and easy to interact with and keep going on your journey around the site. The next step is the homepage. Their homepage is straightforward to understand. The design is quite clean and buttons to keep you moving around the site are quite prominent. When it comes to the last step of pricing and purchase, they never show a price menu; they just take you directly to a signup page. If you love the product and you’ve come this far, that is an aggressive but effective pricing strategy.