It seems like Maelstrom Games is going under. The thread on Dakka has been going on for quite some time now without any representing MG chiming in. A lot of people have been posting there to tell about orders taking forever to ship, or in many cases, so long that they have requested a refund.
Rumours say that they have a huge debt and are moving stock & current assets to other companies in order to be able to fold the company in debt. Which means that if you order from Maelstrom Games (if this all turns out to be true) your money will be in limbo.
Of course, forums are what they are, and I can understand if you as a business really don't care about all that's written on them. But if you look at their website there sure isn't much in stock. It's actually hard finding anything that's in stock at the moment. Further reinforcing the rumour that they're out of money. Even though they supposedly are moving warehouses and such (and has been for a while now...) it seems like a -really-bad- business decision to let 90% of your website show items as "Out of Stock".
I suggest you subscribe to the forum thread to watch for further development. Hopefully this is just a rumour that's gotten a bit inflated. Hopefully.