Another way to look at this though is that even though there is no specific mention of VARs or PF for residential users (in North America), we DO pay for power factor, in the form of higher rates than industrial users who have separate metering to account for it. In other words the utility costs incurred due to any lower PF at residential services is baked into the PUC negotiated rates that we all pay. So if you spend money to try to ameliorate your PF in a residence, you are doing the utility a favor, but it will have no effect on your bill.
There is no free lunch...
" We are all here on earth to help others; what on earth the others are here for I don't know." -- W. H. Auden