I think the standard payout threshold hasn’t been announced yet, but they’ve settled on the payout needing to be at least 4x the transaction fee if you want to estimate (market conditions make this a bit variable right now). If you want faster payouts, StorJ now supports zsync:
I believe signup/registration for zsync is still shell based as it was just recently released. I haven’t switched over yet, but my understanding is that everything seems solid. @Alexey can likely provide more details.