In the US there are various grocery stores with bulk food sections. I first found them in a store in Texas called Central Market, but I suspect they are also at Whole Foods, that has a broader footprint (and is now owned by Amazon). There is a discount employee-owned grocery spreading around the US called WinCo and their bulk steel cut oats are less expensive. Last time at Central Market they were $2.58 a pound, at WinCo they are $0.69 a pound. Same exact grain.