I have a pair of Bozak B-302a speakers. Here is a link to my original thread regarding my purchase and early experience:
http://www.audiokarma.org/forums/showthread.php?t=173796&highlight=bozak
As far as price goes, that is a fair to good price, if the speakers are in very good condition. Often, because of the cabinet size, the drivers get parted out for higher resale value. The cabinets are very large (see my thread for scale), but are usually very beautiful. My cabinets are made by the Barzilay company, and the original owner assembled the cabinets with his wife. They did one very smart thing - they mounted the dual tweeters high in the cabinet to improve HF dispersion. Most B-300 and B-302 have the tweeters mounted in a coaxial configuration in front of the woofers on a very substantial bracket. I believe the tweeters can be dismounted and repositioned in the baffle board for better performance.
The B-300 will be missing the famous Bozak midrange driver. It is available on CL and eBay and is regarded as one of the best midrange drivers ever conceived. Adding the midrange driver completes the B-302A system. Rudy Bozak built his speaker systems using a modular approach. He used the same drivers, but in different cabinets with different numbers of drivers in different positions on the baffleboard to create his product line.
The crossovers are very robust, with some impressive inductors included in the circuit. I have yet to rebuild mine - I probably need to sell something soon to fund this project. I also have to add a curtain to mine - it hangs from the top of the cabinet to the bottom and helps to improve bass response in the infinite baffle design.
There is a very active Yahoo group full of enthusiastic fans of all things Bozak. Here is the link:
http://tech.groups.yahoo.com/group/Bozak_speakers/
I can think of few better vintage speakers that are still affordable for you to play around with. The Bozaks fill my room with warm, full, effortless sound. They are very good with solid state amplifiers and are efficient. I use them for FM radio - our public radio station here plays an excellent mix of music. I also like to listen to classical on these as well.