This has been a good week so far for cheap apps on the App Store. Here are some of the highlights for the week.

If you are a MobileMe subscriber this first app is definitely one to check out, especially at the low price of FREE. MobileFiles [iTunes Link] is a very nifty app that allows you to access, view, and share files from your iPhone. The file viewing is pretty good, offering support for .jpg, .jpeg, .png, .tif, .tiff, .gif, .svg, .doc, .docx, .xls, .xlsx, .ppt, .pptx, .pdf, .htm, .html, .mht, .txt and .mp3. All files are viewed on the iPhone beautifully and even landscape mode has been included. You can also choose to download these files directly onto your iPhone itself for some easy offline accessibility. Keep in mind this is free only for a limited time so grab it while you can.

This next one happens to be one of my favorite games available for the iPhone, Zombieville USA [iTunes Link]. This one is still on sale for the low price of $.99 but this sale can end at any minute so be sure to get in on this deal. For a quick overview and a brief gameplay video on Zombieville USA, be sure to check out our Quick App from just a few days ago.

Lastly, we have one for all of the NASCAR fans out there. Days of Thunder [iTunes Link] is the first stock car racing game for the iPhone and it’s now on sale for a limited time for only $.99! Use your iPhone’s accelerometer to speed your way through six racing circuits, defeat your competition, and win the championship. This is a game any racing fan will appreciate!

Enjoy!

We’ve mentioned the original, FREE, MobileFiles application before, which lets you access MobileMe’s iDisk via the iPhone. Well, now we’ve also got MobileFiles Pro and along with the $9.99 price tag comes a killer feature that a lot of productivity mavens have no doubt been waiting for:

EDIT! native Microsoft Excel 2003 documents just as you would on your desktop. Save the edited Excel file on your iPhone, send to your iDisk account remotely, or upload to your desktop using WiFi – all while maintaining perfect data integrity.

MobileFiles Pro is developed by QuickOffice, so this definitely makes the kind of sense that does. The only question is: when will Word and PowerPoint editing follow?

Have you tried MobileFiles yet? If so, let us know what you think!