Probably have to google for replacement panels and see who has what for how much. Would be my guess.
Not sure if these will work for you and you will wait for them but take a look, good luck. This was on the top of my list but this might of moved it down some.
https://www.alibaba.com/product-detail/Hotcig-R150-changeable-panels-carbon-panel_60507011943.html
Have you looked to see if there's one on thingiverse? If you dont mind it printed?
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I am assuming you looked on ebay, maybe someone trying to sell a broke one for parts or something.
Guess you might have to get stab wood panels. I would go that route, like you said you will spend that much on a new mod anyway.