Harry Potter book value

Inked

I’m wanting to sell my Harry Potter hardback books (adult versions - see photo) and have just checked eBay and they seem to sell as a set for anywhere between £220 and £380 (with one outlier at £800).

Having looked at listings and photos (mine are exactly the same editions as the £800 set which has provided lots of pics) is there any way to be sure that the earlier 4 books are definitely first printings in that format (adult cover)? The last 3 all state First Edition.
                                                                                 


TIA

Suzannah

Hello,
I'm wanting to start reading the Harry Potter books again and I have the last three books in hardback adult edition (and so need to from the beginning really).
Not sure about editions but wondered if you would split the set and sell me the first four?
Thanks

KiLLiNG-TiME

Hope this helps

Theydon Bois

Didn’t know about first thus editions....

Inked

Sorry, only just seen your post. I’m afraid they sold a while ago