Here are a couple of links. The first is for a bag from a chess academy that's a little cheaper than the HOS. I don't own it (yet), so can't comment on quality.
http://www.ebay.com/itm/360142593477?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649
The second link is for an alternative folder with the proper lower case letters for the files. I do own this and like it very much. It might still be on sale. Yup, it's still on sale.
http://www.chessset.com/folding-chess-board.html
The back does seem unfinished although I don't think it's plywood. The front is a matte finish poly.
EDIT: OK, I'm officially an idiot. Just realized that link you gave went to the same site. Sorry about that...
I am wanting to purchase a folding wooden board to carry with me for chess club etc. Am thinking I will get one of the HoS boards from USCF sales but have a questions.
How is the back of these boards finished? Are they raw plywood as shown on this other sales site?
http://www.chessset.com/folding-chess-board.html
Guess it is a small point but would be nice to know if they are raw wood, stained and sealed, or maybe just sealed with poly or some other varnish.
Also, anybody have one of the HoS deluxe carry bags that is big enough for a folded wooden board? Comments about that bag or any others that are appropriate for a folded board would also be appreciated.
TIA.