in which way the transmission of labor happens?

Question

please think about this:
if some person worked one month for 1.000$ and with such money he buy Plazma TV, in fact after the exchange of labor he in fact has worked one month to make Plazma TV and the seller of PlazmaTV has worked one month to make 1.000$. Am I right?

Answer 1

No. You are wrong. We cannot determine what the seller of the Plazma TV made because we do not know what is the wholesale cost he paid or what his retial markup was.