Where should a sponsored or brand deal link go on my link in bio page?

Treat a paid placement the same way you would treat the one link that matters most that week, because that is exactly what it is for as long as the deal runs. If your page lists everything in one long undifferentiated stack, the sponsored link competes with nine other cards for the same glance, and most visitors only act on whatever sits highest.

A simple approach that works for most pages:

• Move the sponsored link to the top slot while the campaign is live
• Give it a clear label instead of a vague "check this out," since a specific card gets more taps than a generic one
• Mark it as its own kind of link rather than a plain custom link, so its clicks show up on their own in your stats instead of blending into everything else
• Move it back down, or remove it, once the campaign ends

Keeping the structure simple during the deal also makes it easy to report back to the brand afterward with one clean number instead of trying to separate it out of a messy page after the fact.