Why do people pay $2 or $3 for a cellphone ringtone of a song? I don’t get it because most cellphones these days lets you just use an MP3 as a ringtone. Get a freeware/shareware application that lets you cut a certain part of a ringtone (no point in having a 5 minute ringtone) as well as down-sample the bitrate to make it smaller, and viola! You can make your own ringtones with music you already own. Or if you don’t own it, you can buy it for $0.99 from the Apple music store (cheaper than a ringtone and you get the full MP3).
I’m a Mac user, so I use Amadeus II for the task.