Cover price is 1'6", 1.5 shillings or 18 old pence. That's 18/250ths of an old pound or 7.2 new pence (calculated at a 1:1 conversion rate). We've used this approximated new pence conversion to arrive at the price listed, above.
Notes: It is exceedingly difficult to find proof of who was the writer of Doctor Who material during this early phase of Doctor Who comics. However, some sources speculate that, as was traditional of other comics in this era, the artist was also the writer.