Most trainers around here charge $400-$600 per month. They would need your dog for about 6-8 months to put an HRCH on him, so that's around $3000-$4000 for training. You also have the costs of tests and handling fees. Assuming the dog passes every test, you'll run 2 Started, 3 Seasoned, and 4 Finished tests at an average cost of $60 each for $540 and about the same for handling fees ($540). So, if your dog passes everything, it will cost around $5500 for an HRCH.
Then, if you want to go for 1000 points, like I did, (with a dog that didn't pass every test), well, I don't even want to think about what I've spent. But, we've had a BALL!!!!