Book Bale is a new subscription service from the same people as Arc Manor.
They're offering a $4.99/month subscription, for which you can download $30 of ebooks from their site every month. The books once bought are yours permanently. Your rights to the books you've bought don't stop when your subscription stops.
And with the coupon code TWICE, you can get the first two months for $1.99 per month.
This offer is only good for one more day.
You can sign up at
https://bookbale.club/
I'm not sure that they have a big enough selection for me, but I'm going to give them a go for a couple of months. I'll cancel after that if they don't have anything more that interests me. But for $1.99/month, if they only have a couple of books, it'll have been well worth it.