Don, that is the least expensive I have heard of...

Naxos raised its price to $6.99 nearly a year ago...  certainly more than
6 months ago.  The complete set can be obtained by their distributor at

   http://www.hbdirect.com/

for $130.01 or about $5.65 each and still well worth it.  You got a deal...
the entire set of Haydn quartets, highly rated recordings for $5.30 a CD.
Naxos usually has a higher price for boxed sets.  I don't know why.

Ray Bayles