Advice for mass Gmails that need SMS verification?

I bought 300 gmails on here. On first use - they all need SMS verification [argh]

It's going to be so expensive.

If I use a free service - I think the accounts may all get banned/closed?

They are being used on French IPs. Would I need to use French SMS Verification. As the French ones [for Gmail] seem to cost $1.5 to $2 each. Which is far outside my budget.

Anyone know of a lower priced service that gives me French Numbers?

Or anyone with experience - if I use Vietnam, Philippines, etc... will Google block the email accounts. As the phone numbers are not in the same Country as the IPs are?

To be clear. The Gmails I bought - I can't use the App Password [it tells me to sign in]. When I sign in - I need to use a SMS Verification. I think the chap I bought it off here, used a cheap/poor SMS verification when setting it up. So feeling a bit screwed right now.

I have limited budget. So any help/advice would be awesome,

With, the notion - that I don't want to just use free services if that means the accounts will get locked/blocked. I can't afford for that to happen. Thanks for any help

Does Google [Gmail] count nearby countries as being more believable. So if I am using French IPs - will Belgium SMS verification be trusted by Google a lot more than USA? As the IP could be close enough for people to be using Belgium phones but not so much USA. Or is it all the same??