I checked the links you've provided, those aren't normal landing pages, they are CPA offers. they have upsells backend sequences after the first trial bottle offer. we know exactly how to make your offer convert not just design the landing pages.
We've done sales funnels and conversion processes for clients in 36 countries, in the past 5 years. Which has been used for product launches, campaigns and promotions that has bought in tens of thousands in revenue.
We are currently working with about 20+ clients; we know how to deliver & get you results. Please check my Private message for more details :) & to discuss specifics. Thank you in advance. Vignesh Kumar