A couple of weeks ago I had time to kill between appointments so I visited HF for the first time. It was better than expected, with some cheap crap and some fairly good items at good prices. I had a 20% coupon so I bought the variable speed multi- tool for $31 and change. A few days later, I found myself in need of a tool of that sort. It did the job and did it well. I had to cut the caulk where it was between siding trim and the first deck board I was removing. I'm replacing my 25 year old PT deck boards with tiger wood. (Goncalo Alves)
It may not perform as well as the $100+ tools, but it did what I needed at a good price. I don't see myself using the tool every day so I could not justify spending a lot.
I don't see them replacing a really good shop like Coastal Tool, but they do serve a purpose.