I usually wait for the price to come down a bit before buying most Doctor Who classic series DVDs but I've made an exception for some & this is one of them..., preordered it from Amazon last month.
Interesting reading my old comment, just been on Amazon & checked my past orders & there it is, never got it though but a bit too late to be chasing it up now really..., thankfully my 2nd copy has only cost me £5.25.