Have you looked at G-Shocks? Practically indestructible and large. Should be several in your price range.
Grizz
Most cheap oversized watches are too.I think the g-shocks are ugly as sin, no idea what people see in them.
Seiko Monsters are talked pretty highly of over at WatchUSeek. They can be had for under $150 on eBay.
The lower tier Invicta line, there are a few oversize watches for under $100
http://www.worldofwatches.com/cust/invictadeals.asp?d=0