Of all the developers that are easy to use, this is the easiest. Pretty foolproof to get consistent results, so I would suggest investing in a change bag and a Paterson tank/reels and do it yourself. We're talking about maybe 50 bucks here, or less if you can find it used. You'll save LOTS of money in the long run. I learned so much when I started developing my own negs it's not funny, and yes, it is easy. I haven't made any hard calculations, but it probably costs me $1 a roll or less to develop a roll of B&W film. And you get to see the results within a few hours, vs a week or two if you send it out.
It used to cost me $15-$20 to send it out when you figured in the shipping, so you can see how quickly you start to get ahead. Developer, stop bath, and fixer are maybe $35 (Diafine is expensive to buy initially but it goes a long way), and you will get many, many rolls w/ this. All you need is a sink.
Or you could sent it to me or probably many of the members here and we'd do it for a nominal fee to cover the cost of the chemicals. Just throw it in a two reel tank when we develop one of our rolls. But I highly recommend doing it yourself just to see how much you will learn.