will these miners ever ROI, even at this price point ?
I can tell you from personal experience the answer is yes BUT you have to be diligent and aggressive.
If you join a multi pool and just sit back and take whatever they hand you you're ROI is going to take some time
On the other hand if you're aggressive and NOT afraid to move your miners around a litttle and try different coins you can do well.
I was in early on NAUT and I did really really well. I was mining over 5,000 coins a day with 28 mhs and now they're selling for 30,000 yatoshi and I had a few day of that kind of mining before everyone else showed up and ruined the party.
I've was also in early on Black Coin - you have to be aggressive and diligent and SUBSCRIBE to the ANN forum here so you get notices of every new coin being introduced.
There are a few every day and you can make money when they're new. Some totally bomb but they're the exception - such as CCX - I have 23M of those and can;t even sell them for 1 yatoshi but hey it only took 3 days to mine that many.
And then there are my go to coins when I want a solid income day in and day out..like Fluttercoin and EMC2 - they're very reliable and hey have some nice fluctuations so you can mine high and sell high and sometimes if they drop after you're mined wait 5 to 7 days and they price is right back up there and then you sell.
Be aggressive and read about every new coin.