For me it's free (I joined a long time ago), but their support team told me they're rolling out a paid subscription program on certain countries. Should be around $1 per month. My advice is to try Mine out to secure the free plan, or just use one of their competitors. The startup Rita (https://ritapersonaldata.com) also got funded recently and seem to get high reviews... Source: about 2 years ago

Heroku - Backend server hosting - $7 Cron To Go - Heroku add on for cron jobs - $9 Approximated - Handle unlimited custom domains - $20 Vercel - Indivisual site hosting - $20 Rewardful - Affiliate program - $30 Digtial Ocean - Spaces for some image hosting - $5 Upscribe - Email marketing and drip campaign - $9 Splitbee - App Analytics and email automation - $32 GSuite - Two email accounts - $13. Source: almost 3 years ago

You can even use custom embeds! Notion includes multiple of these by default such as Google Maps, Typeforms, or tweets. Embeds make just about any custom html possible. I used this upscribe embed form below to handle early access sign ups for the service. Source: about 3 years ago