Wholesalers How Do You Find Comps When You're Not An Agent?

I've got a house I'd like to make an offer on, but I'm unsure if I can grab good comps. It's in a very dense cul-de-sac and I know Zestimates are normally pretty bad, but there are a lot of similar nearby houses that were sold which makes me think that it might be ok to use in this instance. Should I find an agent that can grab me some comps? Do I need to pay him for his time. Any info helps thank you!