In the end it is too expensive for most non-European users. Your very high power cost will require relatively high rates for this service for anyone outside of the EU. In the US by my calculations it costs me about $240 per HD 5830 for the card, the chassis to run it in(split across 5 cards) and then the power to run the card. I currently run out of my garage where I vent the waste heat(in winter months I had the cards in the basement to heat the house). I am looking at a small industrial warehouse with a pair of roof vent fans to run out of as my operation grows. This will drop my power costs as I'll be on an "industrial" plan instead of a residential plan so it further makes your operation cost ineffective to myself.
However! For Europeans who seem to have much higher power costs your service might be quite useful. The other case would be users who don't want to manage their farm as it grows. Unfortunately at this point though mining is mostly a hobby for some people and a serious investment for others. The first group enjoys running their farm, the second group saw this as a way to make money and would be turned off by losing possible profit.
From european individuals i have to charge 23% VAT
How much are you paying for electricity?
I was also thinking for serious miners a faster way to grow, as there is no serious upfront costs, just the operational.
For me the benefit would be from economies of scale and long term prospects.
That way you could get additional 6Ghash/s today instead of just 1Ghash/s for the same money paid today, as an example.
The 7970 1st year costs on this should be less than the GPU + Electricity cost even for most US based miners.
We shall see, a lot of this i have to setup in any case, and when it's all setup there might be interest all of sudden, and definitively would consider mainstreamers would be interested, those without know how or willingness to setup their own GPU farms, and those which just want to support Bitcoin and enjoy some profit at the go.
See if you pay 75€ setup + 43€ for the GPU to be brought online today for ~600Mhash/s, instead of paying ~450€ just to get the GPU, you can purchase full 2Ghash/s from me to have online TODAY. That equals the cost of SINGLE GPU. It leaves me to finance the remainder 3 GPUs + node + supportive/overhead hardware. Platinum cert PSUs are *NOT* cheap.
The difference is: 70$ or 280$ revenue on the first month.
First year 4xGPU Setup: 2060€ fees collected by me.
Cost of 4xGPU + PSU + Mobo + CPU + RAM @ Newegg is roughly: 1963€ excluding PCI-E risers, Fans, power cabling, electricity costs, space costs, CPU heatsink.
At 0.06$/kWh, if that system consumes 750W: 302€ for the year, combining for 2263€ costs for you (Plus what 100€ for the other HW, plus space?), meaning for 1st year you STILL get ahead.