Brownells seems kinda high, where else can I find one?

Yeah, call Browning. or website:

http://www.browning.com/homepage/index.asp

Fix it, retire it. I finally found a scattergun worthy of replacing the venerable A-5 ...the Benelli Super Black Eagle. Ol' J.M. Browning was way ahead of his time, wasn't he?

I am going to suggest Ahlmans in Minnesota. they have bins and bins of used gun parts and gun stocks and all kinds of stuff. they just might have what you are looking for.

Try midwestgunworks.com, ex Browning people. They also have Browning Stalker forearms and stocks(black plastic). They also have Browning invector plus barrels for steel shot.
If it's a 20 ga. try Barry Parker @ Parker Gun Shop in Cut Off, Louisiana. He bought out FN's entire stock of parts a few years ago.
Don't let anyone lie to you. The best shotgun of 2005 was also the best shotgun of 1905. The more things change the more they stay the same. A-5's rule.

Try Jeff's Outfitters: http://www.jeffsoutfitters.com/store.aspx?panel=1&categoryid=95

As for the Stock for your A5. I just bought both stocks for my Sweet 16. I got them directly from Browning. I like Brownells but Browning was less expensive and they were factory originals. If my memory doesn't fail me I think I paid about $125.00 for both stocks.
Longshot

Check out Ebay. Seen a few the other day.

I have been hunting with shotguns for 40 years, the last 10 years with an A5.

When I shoot an A5, I ask, "Where have you been all my life?"