Thanks for the comment! I definitely expect the pricing model to change over time as we get feedback, but I was curious to see how users responded to the per minute model to start with. Selling in blocks has tradeoffs as well (e.g. if I sell in 15 minute chunks, but the user only needs a couple of extra minutes after 14:30, I don't want to charge for another 15) but I'm very open to doing it if that's what users prefer.

Re: the $60/hour rate: given that online tutoring prices can vary pretty widely (anywhere from $10/hour to $200+/hr), I actually think it's fairly reasonable for a high-quality product. My hope is that the quality of tutors won't feel too variable in practice even if students end up working with different tutors for every session -- it's very important to me that we keep a high bar for all tutors on the platform, so a lot of work goes into the vetting process.