I forgot to note that the Carbon fiber comparison isn't entirely comprehensive. Carbon fiber is stronger so you could get away with a thinner sheet which saves

I forgot to note that the Carbon fiber comparison isn't entirely comprehensive. Carbon fiber is stronger so you could get away with a thinner sheet which saves money. However, I will say it still somewhat illustrates the significant cost difference there. If you do have a big enough cubesat then I do think it could make a difference to launch costs. However, the advantages of aluminum and significant drawbacks to carbon fiber mean that using it isn't practical regardless.