that sounds like a fair price for a good quality speaker. If they are in good condition they will give you good sound for the money and will definitely smash the sound of your bose speakers. Years ago I sold Paradigm in a high end shop that I managed and Their speakers were the best bang for the buck products out there and we sold more Paradigm than any other speaker we sold. And even though you are powering them with 40 watts per channel I believe they will work pretty well with that amount of power as long as you remember the limits of your amplifier when it comes to dynamics and volume. I have heard plenty of Paradigm Monitor series speakers powered with lower powered amps and they do well. I would suggest that if you like your music louder and more dynamic that you upgrade to higher power when you get the chance but really you should be fine for moderate normal listening levels.