I was in a similar situation. Alas it seems Powell's is a bit... unready for the selling of electronic gizmos. They don't indicate whether they sell different colors for either the Mini or the Glo, and if not, don't even indicate which IS the default color they'd ship them in.
Also, their page indicates that the sleep cover is available for either reader, but then, just like with the colors, don't give any opportunity anytime during checkout to indicate which one you'd actually like to purchase. On top of the non-updated price as per top post.
I took a chance and put my preferred choices in the "Notes" features at the end of the checkout process (incl. one that said if the Mini wasn't on sale for the advertised price, cancel that part of the order)
To their credit later in the day I received a polite email apologizing for the pricing snafu, and confirming that they'd ship my preferred choices for color & sleepcover, and (re)charging my credit card for the adjusted pricing...
Haven't received the order yet, of course, so I'll update this once I do to let you know if indeed everything was shipped correctly.