overall state of gpu mining anyone active?

I am getting rid of about 10-14 GPU mostly gtx1080s ROG STRIXs as my venture all flopped causing huge loss in rentals and electricity. I am getting rid of them at about 350-400$ a piece on online auction. I bought in the range of about 450-800$. Haha. Any chance it could go up?

Here is my thoughts
Downtrend factors in price are:
- RTXs are out that offer more power although not too much powerful with gimmicks i.e. AI tensor which does not really offer much adv. in terms of mining as well as ray tracing. So as far as GPU mining concerned, GTX-s will be favourite.
-Down the road, more and more powerful GPU will come out, reducing the GTX lines even further irrelevant.

Uptrends:
- Sooner or latter excess inventory is going to dry out. May cause some lift in prices.
- Some coins (eth) appears to have difficulty substantially reduced some coins (zcash) has difficulty went up so much GPU mining probably will not make sense. I am not sure of overall trends of popular coins and how it is favoring the GPU-s. I am aware eth and other coins will eventually transition to POS mining from POW making it further irrelevant.

With all those factors combined, should I get rid of them ASAP? Or hold it in hopes of gathering some value? I also sort of interested in doing AI, tensorflow, caffe deep learning rental my GPUs but there is no infrastructure as it is mostly done in enterprise servers not through gaming. I did hear about some vendors offering cloud like deep learning rental of GPU-s.

Thanks.