I'm amazed that you are asking this now. I was in the lab at work last night until 10:30 making circuit boards. I would've been lost without the Dremel, Dremel Drill Press, and #65, #50, & #35 drill bits. I'm guessing that I've had a drill and press at home for at least 20 years. A couple of years ago, I bought the router attachment, only to find that it wasn't compatible with my older Dremel. So I bought a new Dremel. I just picked up their D-vise, which is similar to a Pana vise, with a Christmas gift card. I've had to change the brushes in the older one but they are readily available. They make so many bits and attachments that you can probably find one for everything but crimping coax. I remember looking at one of the little saw blades and doubting that it could cut butter. Then I watched it zing right through something and became a believer.

I also find it very helpful drilling precise pilot holes for much larger holes that I drill on the full size drill press. Sometimes stubborn plated through holes on boards are a bear to clean out after you remove the chip. The Dremel with a #65 bit has saved the day numerous times. I hadn't given any thought to the cost of the various bits because I buy them so infrequently. They probably would only be a small fraction of most folks weekly Starbucks budget.
You won't regret your purchase.
Joe