IMO, all of the PAP face shields/hoods are way overpriced. They have been built for high risk PP situations where the price is not as important compared to the risks, so enterprises with an eye to their legal obligations under OHS just cough up.
I do have a 3M Versaflo 300 with battery and filter on the belt, but I rarely use it, preferring the tethered rig that I put together. I got my Versaflo at a very substantial discount at the end of the last mining boom crash here in Australia, and, although a very good unit, I couldn't recommend it at the absurd price they now ask for that unless I was spending someone else's money... :~}
As I'm either at the lathe or the bandsaw I don't need to have the same portability of an all-in-one PAP face shield/hood that some may need in their workshops. So, I made my own tethered PAP with an impact rated face shield/hood. I still use a version of that. Its major advantage is its very large HEPA filter size (because that component isn't worn on the body) and the separation of the filter fan from the hood makes it very quiet to use. The other advantage is cost.... it is way cheaper (with better filtration) than any of the all-in-one options on the market.
The downside of a tethered system is the distance you can move when using it. I got used to that a very long time ago and find that disadvantage is outweighed by its advantages.
There is a real need for an all-on-body PAP shield/hood for the woodturner that is at a reasonable price to replace the old
Triton Respirator. There is a very nice business opportunity waiting for an inventive and enterprising person. After all its
just one of these plus a portable rechargeable air purifier
like one of these consumer units with a good HEPA filter in it hooked to a belt and connected with a hose. It might even be turned into an all-in-one to be worn on the head...
If for whatever reason those consumer air purifier units aren't up to the task, the other option would be to build a PAP unit from computer DC fan, consumer rechargeable batteries and HEPA filter of whatever shape is required, which are all very low cost component parts other than the HEPA filter, but you wouldn't want to scrimp on that key component.