Most clinic prices are set for the dates of the clinic, not per day. And most are 2-3 days with one lesson per day. I paid $1100 for a 3 day George Morris clinic and with others I’ve paid from $250-375 for 2 day clinics. You usually add stabling costs too, unless you’re able to trailer back and forth. But then you have trailering costs to add lol.
That said, there are clinics that charge per lesson, but most clinics (clinicians) prefer to have students do the entire clinic to get the most out of it.