Four times a day, times say 5 years = 7_300 tries. Times 10_000 accounts ≈ 73_000_000 tries. They should have access to ~70 accounts by now.

Cheapest VPS is $5/month, residential proxies are $3/1Gb, which equals ~$200 / 5 years.

$3 per hacked account — is it good unit economy?