$700 the rough price that a black shar-pei can fetch. A proper bloodline 5point red animal can fetch in excess of $3,000 - $4,000. My shar-pei is worth around that, but since he lost his right eye as a puppy, we got him for allot cheaper than you got your boy
Sorry to say but the black shar-pei's don't seem to be worth as much because so many are around compared to a cream coloured or red coloured bloodline.
I'll give you a bit of advice, god knows you'll need it with a shar-pei. They love to run, if you take your dog to the park he will run and run and run. Our boy gets a walk a day and at least some time at the park, plus he goes out the front to go to the toilet fairly often. They don't go to the toilets near they're food, they are one of the cleanest dog's you will ever meet, I suggest at least once a day you take him for a 10min walk to go to do a crap. Your dog will come to this stage in about a year where he will argue with you. For example. when ours was that age, if he was at the top of the stairs (where he wasn't allowed) I would say go down stairs, he would growl, if would say go down stairs again, he would growl again, after one final time I would grab his collar and nudge him down the first few steps, he would bark and turn around and growl, not because he was going to attack me, but to say "Hey, F*@K off!!".They also use there paws allot when playing(it makes it easy to teach them to shake hands).
Here's just a rough overview of the dog, if I can get my mum on the computer I can get her to help you out with their food, and which meats you use etc etc help allot with the coat and ear problems they are suppose to get often.
Kane