Up front capital invested can range from as low as $500 for a small, shallow pond aeration system to as much as $8,000 or more for a larger system or a solar aerator.Operating cost is dependent on the number of amps needed to power an electric motor multiplied by the electricity cost in your area.ome electric aerators might run for 2-3 years without any major issues and others might run 5-7 years or longer. The table below is based on a set of assumptions that is fairly representative of actual costs for a 1 to 2 acre pond or small lake.
Surface Hub costs less than half that, and is in essence a collaborative center in a box. Costs for a conference room that would accommodate the lower-end unit are about $6,500 to $27,000, again not including furniture, installation, service, and ongoing management costs, so a similar savings can be had there as well.
The base $899/Â£749/AU$1,349 model of the Surface Pro 4 will come with a Core m3 processor, 4GB of memory, and 128GB of solid-state storage, with the top-of-the-line $2,199/Â£1,799 configuration stretching up to a Core i7, 16GB of RAM, and a 512GB SSD.There will also be a 1TB solid-state drive as an option.he starting price is $899 in the US, and the keyboard cover is still sold separately at $129. In the UK it starts at Â£749, with the cover adding Â£110. In Australia the Pro 4 will start at AU$1,349 with further pricing, including accessories, still to be confirmed.