Anyone know how much this is worth at the moment?

It's likely only something that would sell as a collectible now, as there's the vending machine for it here:

https://subeta.net/vending.php/luminaire#/home

That said, it probably isn't an easy thing to sell. It used to sell for 500 CSC, but now you can get three pulls at the vending machine for 450 CSC. Before hover prices were reset it looks like it had an average price of 41m on SubetaLodge.

Thanks! I wasn't aware there was a vending machine for those.