What are you asking for just the Ophir sensor? I wasn't able to find an exact price without the other items you also have for sale.
PM sent about the Ophir and Argmeter combo
...just to be clear, is this what you are selling? This Ophir with the aluminium heat sinks and that ARG digital readout board? The reason I ask is you have another photo of an Ophir without the silver aluminium pieces.