You can't buy oxygen at Cvs, The oxygen you consume while there you do not pay for. You can buy bottled water and junk food but that is probably not the best choice. Of course you know that I meant consuming to feed the addiction. When we buy things we really don't need but just want. Like a new iPhone to replace a perfectly good iPhone just to get ApplePay so we can bitch when CVS or ? Does not allow us to use it. How dare they.