Price Discrimination? Racial Discrimination?

From a reader named Philip Mulder comes this photograph:

Philip says this is a hair-cutting joint in Washington, D.C. As you can see, it offers a 50% discount if your name is — in this case — Amanda, Rachel, Katie, Peter, Andrew, or David. I don’t have my master database of black-white names handy (hey, it’s summer), but I’m pretty sure that at least five out of those six skew pretty white. So, a couple of questions:

+ What names do you think will be featured the following week?

+ Could this price-discriminating advertisement in fact be construed as racial discrimination? If there’s a plausible argument to be made that tipping should be outlawed because blacks systematically earn less than whites, might some legal wizard — armed with black-white names data — see this sign as a discriminatory discount?