I agree with above^^^
One guys idea of "restored" is completely different than anothers.
When I sell a motor as "restored" the thing comes completely apart. Dip, then soda blast all parts. Re assemble with all new or NOS items like gaskets, pistons, rings, rods, bearings, seals, etc... Full mechanical tune up of consumables, tuned, tested and painted/decals.
There are others in my area that sell "restored" motors that put new plugs in and spray carb cleaner in the throat. So, online, take the word "restored" for what its worth!
In my humble opinion, the price of a "restored" motor would vary wildly depending on who restored it. There are a few members of the AOMCI that restore these 20s, to 40s vintage that I might pay big bucks for ! Similar "restored" motors, might only be worth 100 bucks to me. So that is why I find it very difficult to put a price on a restored motor, unless I know who the restorer is.