[Buying]  [MFB] LF: Circle Flat or Metal Flat

Exactly what it says on the tin, the two parts I'm looking for are Circle Flat and Metal Flat. I know that the only place to find a Metal Flat is the Spiral Capricorn bey, so I'm willing to take Circle Flat because it's much cheaper and more accessible.

Please tell me beforehand what your Shipping costs are, I don't have a lot. I'm buying from California if that helps.