Not all of them. The JDSound bundle isn't bad. It's a free AT2020 along with a crappy stand and a cable. The stand is cheap, but it's better than nothing. The mic is pretty decent, IMHO. Sure, it's not a high-end mic, but it's a nice compromise between LDC and SDC mics that makes it a rather nice thing to have in your mic collection. $99 is nice, but free is better.
And, of course, their bundle is still at a price that makes it eligible for Presonus's special freebies when they have them going. When I bought mine, there was a deal where you could get a free HP4 by mail-in. Came up to a couple hundred worth of usable freebies plus a crappy mic stand.
The Mackie gets great reviews, though. Definitely worth a look.