Prices were from a recorded range, which included expensive stores... so could be skewed to the high side.
I have some catalogues as well from that era, plus some archived sightings, which I will go through after I've done up the toy lists and re-edit those sorts of minor details.
If you have something that is easily accessible, I can change the listings now from your numbers.


BTW, this section hasn't yet been officially launched, but each new post shows up on the daily listings, so it's not going to be a surprise when it is added to the main table.
It's a work in progress though, which will take a while before enough is posted to make it worth unveiling.