If you carefully change 2 fans in the ASIC and clean it from dust, it will be difficult to find that the ASIC was used before.
Now there are a lot of large farms in China, so mining equipment is also sold on trading floors.
I am sure that in the near future there will be a lot of interesting proposals.
I think you've heard about the new Litecoin / Dogecoin L7 ASIC.
True, I'm aware if the L7, is your concern on the difficulty increase or that the L3 prices might go down in once the L7 hits the market?
I'm not looking for large farm, just a couple or miners or so and maybe build slowly as I go.