Question about Beike Wireless T-Mobile Pay As You Go $3/month plan

I travel outside the USA frequently and need a way to receive 2FA texts from the USA and to be make the occasional phone call to the USA. My phone has no physical sim slot.

The Beike offering on eBay seems to do what I want, and they look to have a long history and outstanding reviews. I would like a reality check from the Reddit community. Is Beike as reputable as they claim? Are there downsides that I am not seeing?