ive been seeing this around here at all 3 big box stores for a few years. down to 8" wide can be glueups.
menards here does have some S3S lumber from a mill. red oak, yellow birch, poplar, maple, alder. red oak is always in stock but the others seem to switch month to month. i havent seen anything wider than 8" but the price isnt too aweful bad. the red oak is about $2.85 bd/ft which isnt bad for S3S at a big box.