Darned if I know why, but it seems the peanut oil has become scarce on the shelves of our local supermarkets. I've seen one size, somewhat larger than I want to buy, of Planter's brand. Harris Teeter has the same size in their house brand, but that's about it. Even my local Grand Mart has only the large bottle of Planters peanut oil. Nothing against Planters, but I go through about 16 ounces in about a year (I just use a tablespoon full at a time for wok cooking).
There are dozens of olive oils and oil from all sorts of plants, but peanut oil seems to be scarce. In lieu of the answer I want to hear, are y'all using some other kind of oil in your wok these days?