If they sell for $100. it will surprise me !! Thats the thing about ebay,, you can ask whatever you want,,,getting it is totally different,, thats why the listing has a "Make Offer" added !! If they are bronze,, they are unsigned so cannot be attributed to an artist, and even though they are different from what is usually seen, they are not unique enough to bring even close to that here in the U.S. in my opinion !! You are in the Uk are you not ?? They may sell higher there but it would still surprise me if it did !! The ones on ebay are listed for a month,,click to watch this auction and at the end you will know what they bring !!
Bigwull may know about what they would bring in the UK !!