The rarest breyer model would probably be Trigger, he was owned by Roy Rogers.
He was one of the first breyer models. Check on ebay!
No, Breyer still produces model horses.
Breyer horse accessories are well known for their superior quality and detail. Collectors of Breyer model horses use them to compliment their model horses.
The company Breyer produces collectible model figures of animals and is famous for its horse figures. A "Breyer Bull" is simply a very detailled model figure of a bull.
Only nationally or world-famous horses are made into Breyer models. Once a horse reaches that level, Breyer may choose to consider it :)
Now
yes
Breyer model horses are well made.
The best selling Breyer Horse at this particular time is the Traditional model Espirit. You'll find the best price on that model at LookAGiftHorse.com
eggs
any of the legendaries.
The most expensive breyer horse i have bought is 150 $
amazon.com,ebay.com,and more just type in places to buy breyer horses and then click the website you want to look on.