Can you estimate the monthly cost if I run 30 minutes per day on the cloud?

Yes — at $0.06 per minute, 30 minutes a day is about $1.80 per day, or about $54 per 30-day month. This matches the usage-based SaaS pricing of Pricing and the cloud plan summary in Find your perfect Genymotion plan.

If you use the Unlimited plan, the cost is a fixed 219 per month per virtual device instead of per-minute billing.