I inquired to our manufacturing, and they said that allot get reused
internal, and some get tossed.  Of course, we seem to toss allot of
parts...boards....assemblies..

Have to agree, that the cost of recycling might not benefit the rewards.
There is a mix of clear and black plastics usually, and to recycle I think
(no flames) they need to be the same color, material type, etc.