Where online can I purchase a copy of Kevin James's standup comedy DVD
"Sweat the Small Stuff" that is less than $50.00 and does not require
a bid?

I don't have the answer you asked for, but consider...

1. backorder or sign up for e-mail notification somewhere, if you haven't already:
http://www.cduniverse.com/productinfo.asp?style=movie&pid=6016764

2. Check tv-now every month to see when it will play on TV (it wasn't
long ago it was running multiple times):
http://www.tv-now.com/stars/kevjames.html

3. renting online and figure your path out from there:
http://www.netflix.com/MovieDisplay?trkid=73&movieid=60031404
http://www.greencine.com/sitemap/movies/Kevin-James--Sweat-The-Small-Stuff.html

4. OR, better still, see if you can find it at a Blockbuster, as part
of their no late fees program has some kind of no-return "sell you the
movie" feature, but you might want to ask ahead of time how much that
means:
http://www.blockbuster.com/catalog/DisplayMovieSpecialOffers.action?channel=Movies&subChannel=&movieID=130875&displayBoxArt=true