We offer free diagnostics. We like to get our hands on the unit, verify the issue, and provide a quote. This is all done free of charge.
If you strictly want a logic board quote you can EMAIL us your serial number and we will see if we can locate the proper part.
In MANY cases we will still need to see the machine and get part numbers off of the logic board itself.
We are not affiliated with Apple® and often drastically cheaper.
Also see our page on MacBook logic board repair.