Why do people buy GHs instead of MHs

Why everyone buys miners like Ant miner that runs in GHs when buying for example ASIC Scrypt miner is a lot profitable.
ZeusMiner VOLCANO 300Mh/s@1000W that costs around 1,600$ has ROI around 66 days without electricity. And cost of electricity is around 60$ monthly. So it's around 72-75 days to get ROI.
I am beginner in mining and this is all just calculations.
Cost of electricity is 0.09$/kWh = 0.0003 BTC/kWh = 0.0072 BTC/Day = 0.216 BTC/Month = 60$/Month
Clevermining.com has 0.0003 BTC/day per MH/s x 300Mh/s = 0.09 BTC/Day = 2.7 BTC/Month = 730$/Month
Monthly profit is 730 - 60 = 670$
Cost of Miner is 1600$
ROI = 1600 / 670 = 2.4 Month = 72 days
Am I wrong?

I'm not sure where you're buying those ZeusMiner?

But it could easily come down to the trust in LTC. You might not be aware, but in like a week, the block reward will drop. So the ROI on Scrypt units is very unsure at best.

the zeus volcanoes were never shipped as far as i know. another saga on the pre order scams

So is it really best to invest in GHs instead of ASIC Scrypt?

Better to support the network(s) that you think will actually grow and be around for a long time, imo.

Quote from: Hollow2285 on August 16, 2015, 06:48:55 PM

So is it really best to invest in GHs instead of ASIC Scrypt?

Whichever works best for you, just wait a bit, scrypt is very unsure atm with the halving. Here is the halving clock for LTC;
http://www.litecoinblockhalf.com/

Even when the reward will be halved it still has around 140 days ROI which is pretty good. I was really into cloud mining but it has impossible ROI. Something around 300 days -_- That's ridiculous. So I planned on buying my own rig. I have 2,000$ to invest. So what you guys recommend.

Quote from: Hollow2285 on August 17, 2015, 05:27:36 AM

Again, where are you getting those units? The comparable units from company that actually sell/ship scrypt ASIC cost more than that unit for 1/3rd the hashrate.
Kinda sound like you'd be looking at impossible ROI, ever, when they run with your money.

Where can I find trusted sellers?

Ok - so the Zeusminer Volcano never existed.

Cleverhash appears to be a scam. I just see renderings of nonexistent products.

So these cannot be compared because they are vaporware.

The most reliable Scrypt miner IMO is the A2 Terminator. You can find them on Ebay for $1000 to $1200 at either 88Mh/s or 110Mh/s. They use about 750 to 950 watts (depending on how cool the machine stays, quality of PSU in the unit and the Mh/s).

So that's ROI around 330 days. Damn. So what you recommend? Is it better to invest in own rig or cloud mining.

Well Cloudmining is a ponzi scam -- so stay away (no matter what people say).

330 days ROI -- I'm not sure what you are using to determine that number?

If you are weary of buying equipment -- then just rent real hash from a site like Nicehash or Betarigs.

As hdmediaservices said. Be very careful of Cloud mining. Hosting your miners in trusted place can work if its really cheap.

For investing, it depend on your electricity price. If its really 0.09/kWh I might dare say just forget about it. You MIGHT be able to ROI something like a S5. You'd have about the same ROI as buying hash on Bitmain's.

In short its pretty much simple, if you see something like 60-90days ROI from some random seller on the internet with a great ASIC where you "don't understand why people don't go for this", then you're about to get scammed.

60-90days ROI is only possible with free-ish electricity with outdated hardware people can't normally run since the electricity cost is prohibitive.

For example i ROI antminer S1 in 3 months.