I suppose it all depends on what you're wanting to do with it as chopperpilot47 says.
I had several of 'em a few years back - did all long-line stuff. They performed like a small Lama - lots of power but, pretty dad-gummed slow on the straightaway. On a warm summer day - at altitude (~9000') - I was outlifting an Arizona state owned 407 and a herd of 206's.
DOC is anywhere from $150.00 on up depending on what all you (or your book keeper) want to throw against it.
When Soloy sold the conversion (STC) to Hiller way back, some parts got hard to come by and any customer service went in the crapper. I'm not sure if it's gotten any better...
...but, It's right up there with the 315's and 316's as my favorite aircraft.