I think that price would be acceptable, because I want to raise some funds to order a German system basset. I changed to Viennese clarinets and I don't play Boehm so much now. The Chadash plays beautifully though, and the right thumb keys work very well for the arpeggios in Mozart original versions for basset clarinet. It also makes the A more resonant and sounds even better. It will work on a Buffet (I tried). Chadash won't make it separately so I won't sell it alone. I use a soprano sax case to hold the extension.
Thank you for your prompt response. To be honest, my intention is to obtain the basset clarinet extension since I have several pairs of Bb and A clarinets in my collection already. I wonder if it is possible for you list the extension by itself and I'll gladly purchase it from you. Otherwise, I wonder if there is any room for you come down a bit in your total price, say, YYYY instead. Please forgive me of the previous offer. As you know, this will be a fairly big purchase and I am giving it a more careful thought.
I have several sets of clarinets also. Too many to play them all! I originally just wanted the basset extension, but Chadash only made it with the A. I had an older Chadash Bb and replaced it with a new one to better match the A. Then I changed to Viennese bore German fingering instruments, which goes well with my oboe playing. I relisted the set with more information. I don't think it would be right to separate the basset extension from the A.