You can only make ROI if you buy million worth of asics to get 40% discount.
With Aiscs only richest are winning.
Only sellers are winning with Asics . Their strategy is as follows :-
1. Start overpriced pre-orders for miners.
2. Delay shipment and mine the shit outof miners.
3. Start shipping and reduce the prices so that they can make fool of users who want to buy new.
4. Start pre-orders for Higher speed miners.
So its win -win situation for them, and people are nothing much besides helping them fill their pockets.