Tired landlord off-market deals is your best bet for buying at a discount. Second option would be homes that can't sell on the MLS, which is what I do.
FSBO homes tend to be priced way too high because the seller usually thinks their house is worth more then it is.
If you are willing to PAY a wholesaler fee. If you are willing to PAY for a lead from some website, why not invest that money into SEO that will give you lasting results!
In fact there is a strategy out there called "The Forced Traffic & Conversion" Strategy.
Look it up. Doing it this way will have you market like a pro while your marketing budget is paying for it self!