Readers may be interested in this link, which is to all the SBF sentence-related markets on manifold.
Caveats: just like twitter follower counts, instagram like counts, hn upvotes, this is "play money", the mana amounts the traders bet here are numbers in a database, not real cash. Also the number of traders is fairly small.
The top markets have settled on these values:
300 traders, The most likely time served is 20-30y
270 traders, he'll be sentenced to 20y+, 86%
135 traders, he'll be sentenced to 50y+, 27%