Most turtle prices are negotiable, as with anything in life. Price is dictated by supply and demand. If there are a few things that many people want, the price goes up. If there many things that only a few people want, the price goes down. I paid $350 for a 2.5 inch (6cm) Mata 4-5 years ago. It was advertised as CB and CR but only the person I bought it from knows for sure. Don't go with what others are paying, stick to what you are willing to pay. Do a full research on everything required before you even consider purchasing one. There are only a few in the US that are CB. Most that you see offered are WC and are not for beginners. Matas are very hard to keep in captivity as compared to other species. I've kept turtles for the last 17 years and Matas are one of the few that I have that require VERY specialized care. I have 5 in my collection, ranging from 5-14 inches and they require my upmost care. I've paid from $300 - $700 USD for matas. Most are very picky eaters and require LIVE fish. Some keepers are lucky and can use frozen/thawed but don't be surprised if your mata only eats live fish. MOST of mine require live rosy reds, mosquito fish, fathead minnow, etc... I DO NOT feed goldfish b/c of the copper issue(most fish farms treat goldfish with copper sulfate to combat disease, parasites, etc....)Please do your research before you purchase. If you have any questions please email me or someone else who is knowlegeable.
love them.