I recently learned about other PAYG travel eSIM options and that's what I'm trying now. I already knew about Roamless previously but having to create and maintain separate accounts for each eSIM/device was too much effort for me (one of the reasons I stopped using the T-Mobile $10/5GB).
Jetogo (UK exit node, 300-400ms ping) - $5 starting balance, no expiry, shared balance across 4 eSIMs ($1.50/GB for US)
Bcengi (US exit node, 60-70ms ping) - $10 starting balance per eSIM, no expiry, can transfer balances between eSIMs ($1.68/GB for US)