The Home Machinist!

I have several new casting kits, I am trying to place value on them.
1. Breisch/Peters, Olds
2. Red Wing Motor Co., Thorobred
3. Stuart #4
4. May engine (I don't know much about this one)

Any help placing value on these kits would be appreciated or if there is another site I should try, let me know.

Thanks
Marty

I don't have any info on your engine , bit you might want to check out the " Home Model Machinist " site . They have some experts there .
I want to apologize for using you signature line . Did not know that it was being used . Regards