Greg:
Mesa's turn-around time is pretty fast. I got a cover for my DC-3 several years ago, and I received the cover within a week of placing the order. If you move the amp around a lot, you should consider spending the extra $20 and get a padded cover - it really does help protect the amp pretty well. I have one and it has kept mine looking brand new - not a blemish to date.
Go here: http://www.studioslips.com/sel_cab.php?ManID=1
These folks actually used to work for Boogie, and from what I've seen, they make a good product. This may be who Boogie is using now anyway.