Well, the A3s unless you got them on day 1 out of all customers you wouldn't have got your ROI yet, their price was 2300$, difficulty went up from ~0.5M TH afaik to 11M TH in 1 week, at 40$ per 1K sia that would still have made 1K usd, but prices of sia went down afterwards to 20$ then 9$.. you had to mine 120K coins at 40$ to return your 2300$ which till now none of Batch 1 miners did, afaik most should be around 100K coins