PIRAKA STRONGHOLD AND BIONICLE SHOP DISPLAY UNITS

Good evening from the UK.

A got my first Lego, back in 1957 and have never been without it , although I had to have some children along the way to have an excuse to use it.

I would like a bit of advice about three items of my son's, Piraka Stronghold store display, in perfect condition, with original mains powered lighting and two Bionicle store displays with battery powered lighting effects, with shelf mounts.

He would like to sell them, but has no idea what they might be worth, if anything, or how desirable they might be. I have been able to find out little about them.

The local toy shop knew him very well as he collected every bionicle, and offered the displays to him when no longer required. He is now twenty-five and could use any cash he could raise for them.

So, over to people more knowledgeable then him or me. Any advice?

Thanks.

PS. Apologies for the quality of the images