I am Jewish! That is basic... If it would have been Walmart as the seller I wouldn`t even think for a second (I know that jewish people have stocks in Walmart, but Walmart is open on Shabbos too!) so I wouldn`t care.
Mind-blowing!!
Like, c'mon, duh
If the guy might be an Orthodox Jew, I'll go to great lengths to verify if I should cancel it because I wouldn't want to make an Orthodox Jew loose money, but if it's a goy, (or if it's partially owned by a Jew, who doesn't close down the store which he has shares in, on Shabbos) then I couldn't give a damn about him loosing money.
... What have we come to...