I forgot how that Tec 31 1.0 copy looked that sold for $26k last year. I remembered I had a conversation about it in this thread and predicted the one copy that sold for $44k this year. I think the one that sold for $26k has brittle pages hence the price. The $44k copy had supple pages, so different results.
I believe another low graded Tec 31 from last year also sold in around the $40k range, forgot if it was a 1.0 or 1.5.
But in terms of the Tec 33, we'll see how it goes when the next copy goes up for sale to see if current prices are sustainable. And if it does, I'm in a very deep hole
Out of Tec 29, 31, 33, and 35 I have seen more Tec 33's than any of the other copies since I've started following/collecting pre robin Tec books. It's the most common out of the four. Im sure we will be seeing more copies for sale next year.