I was thinking of spending some $100 renting a powerful online cloud computer to get a large % of coins soon after a coin launches. How many khash/s do you get for $100?
Is it the cheapest way to mine a coin, using a cloud based service? Also... where is a guide to doing this, am I right in thinking Amazon offers this service?
what to want to mining? for $100 is same as 0.1734472 BTC, i think you can get at least 0.01 ph in nicehash but i don't familiar with nicehash. i only use miningrigrentals for renting but it was a few months ago. with 0.1734472, i think you will get at least 12.60T but it depends on the list of hardware rented on miningrigrentals.
i don't think you will get lucky on mining with $100 to mining bitcoin. maybe you will get luck if you mining altcoin. but i am not sure with $100 will ge ROI at least in just 1 or 2 day because i have experience with renting on miningrigrentals, first i renting scrypt hardware for just 12-24 hours, then i mining on a pool and what i get its too low than i can imagine. so my suggestion is, better you buy real hardware, then you can start mining in your home. but this will be depend on your electricity fee, if you can handle this, then you are fine and can continue to mining with your hardware.