Would 'you' buy a C-22 without a seatrial?
I did. And I don't recommend it. I purchased an '83 C22 that was "ready to sail" including trailer for $3200 that was in a slip on the lake. No survey, no trial sail. Big mistake.
When it was all done I found the trailer had a bent frame and needed a complete rebuild, the swing keel cable was broken so there was no way to raise the keel to get it on the broken trailer, and the outboard had a bum impeller which meant I could not motor it to the ramp to put it on the bum trailer even if I used some "southern engineering" to get the keel up.
Beyond that, the PO had never actually sailed the boat. There was no headsail, the rigging was scary, an auto battery for the cabin (not a deep cycle), and 2" of water in the bilge area. Just to mention the big items.
All that being said, I knew some of this at the time and thought "well... its cheap, it's a project boat, I can make her sail again". And I did. But I spent way too much time and money making her worthy. Yes I had many a good sail, lots of great weekends with my SO, but the trailer is still junk in my backyard, and today she sits in a slip "ready to sail" and offered for $5000 including the trailer (but we both know it will sell for much less).
I can not stress the importance of a "test drive/sail" or a survey. When I got my new Catalina, I spent about $30/ft for the survey + cost to have her hauled out. Best money I ever spent. It sealed the deal and apparently I scored in a big way in that "fair market" for what I now own (in my area) was about 15k more than I paid for her.
Just my $.02