Update: So far I've materially lost $768.10 (difference between "Total outstanding principal at time of sale" and "Total proceeds from sales less fees"). That doesn't include accrued interest.
I've sold 875 (some are still in pending, 848 have settled). 52 on sale. 46 unsellable currently, due to pending payments, bankruptcy, or default.
Given that I started 11 days ago, I don't view it as being too bad, but the more I look into how LC works right now, I'm glad I chose to get out, even if it's costing me a bit of money. It's an expensive lesson learned, but I'm happy I'll be able to dump that money into Vanguard, soonish.
I'm going to lose at least $150 more closing/transferring the IRA, and my account anniversary date is coming up soon, so if LC doesn't pay the IRA fees (less than $10k invested currently after the sales), I'll lose $150 more there. I'm bleeding money like an SUV clown car driver.
If I'd realized when my anniversary date was, I would have started this a month later, probably. Money lessons are the most painful to learn.