When you have low appreciation you need to make your profit going in. Like Ted is doing the profit is cash flow even if it never sells for more.
You do it easiest with motivated sellers. You can leverage using owner financing or subject to but you still want your profit upfront, along the way or at the end. All of them is best if you can get them.
You do not put up cash to buy at market prices without appreciation. Use an option. Isn't subject to a form of an option. Isn't owner financing a form too. You just have it that there is no recourse on you personally, only on the asset.