u/duncanstibs

I've recently found a load of old Sonic the Comic back issues from the UK - and have most of the issues between 65-102. These include a couple of unnumbered special issues like the Knuckles Knock-out Special Summer. They're in variable condition, but have all been well-used.

I've tried looking at the ebay sold prices for these, but some of the rare issues like the summer and winter specials seem to be so uncommon that there aren't many actual sales. I've just put everything on a quick auction but I think the market is small enough that there's are no recently sold back issues that I can use to set prices.

Does anyone have any idea how I can find reliable price data on these so I can price them properly?