? about buying home with tenants

[Marci Stein]

good deal upstate NY-2 bedrm house for $22,000. Taxes $5000 yr.
Realtor states tenants pay $1000 month,not sec 8, not includ. utilies.
can i rely on this info? what if turns out to be untrue and rent includes heat ?
how can i verify realtor info? can i ask to see past few months rent checks?
seems to good to be true get my money back in just 3 years!