@Cal Ewing, don't give any money to a wholesaler without seeing the property yourself unless you are experienced enough to make that call. If you give a wholesaler a $2,000 earnest money deposit that's nonrefundable, it is his to keep even if you go look at the property and realize it's not a good deal.
Don't worry about a deal passing you. There are plenty more that will come and go. Don't rush into something without doing all the due dillegence. Before anything, run your numbers and make sure it's a good deal before you pull the trigger. If the numbers make sense, go for it.
I would take a property you feel strongly about and like I said, run the numbers. Then, run them again. Get an ARV you are confident with. THEN, go look at the property to assess damages. You should know what to work with as far as rehab costs from there. Only then should you talk about going through with a purchase.
And also just a heads up, a bunch of wholesalers are newbies. Wholesalers in general get a bad rep for a bunch of reasons, but if you can find one that's completely legitimate, STICK WITH THEM. Don't just trust any deal thrown your way. Some will literally have a property under contract for $3,000 less than market value and want to assign the contract over to you for a $5,000 assignment fee. I'm serious, these things happen. But again, wholesalers can be super beneficial, so don't let me scare the idea away from you. As long as the numbers all make sense, go with it. Don't rush into it by any means, but pull that trigger when it makes sense!