Depending on the set you might be able to get him a razor and strop set from SRD in that price range. The dovo special that is up not with a 3" premium leather strop is under $200 and both should last a lifetime.
Another thing you could do is a scuttle maybe... they can be almost heirloom type items.
Ok now away from shaving stuff... Considering what he is doing and where he will likely spend some time there are a few items that you might want to consider.
A really nice, heirloom type pocket knife. Sometimes you need something other than a survival knife and a knife can be a very special item to a guy and they last forever.
A pocket watch can have a picture put into it similar to a locket. In a combat zone a wrist watch may be a no no. A well made watch will also last forever, be sure it is waterproof though. Something that shows multiple time zones would be nice.
Is he a smoker? A good lighter can be a nice thing to have and if he ever gets stranded could even save his life.
So that is my perspective from a guy
