If we want to mine Bitcoin for ourselves for example, what would be the payout for 1 year assuming BTC price stays at $2,500 and we have 10,000 tokens?
Giga Watt has a calculator
https://giga-watt.com/promo/prices on the website which computes approximate earning within the following year; however it does account increasing mining difficulty, so we wouldn't be able to answer your question with precise number.
Is the "efficiency" (or $14,292) mentioned in the picture below the return from mining? Let's say I have 2,928 tokens, what are the additional costs that I need to bear for mining Ether in the example shown in the picture?
Also, in the picture above, it says that the annual hosting fee is $1,158. However, in the picture below, it shows that the annual hosting fee saving for 2,928 tokens is $1,731. Could you explain the discrepancy?
14292$ is the annual efficiency of miner.
WTT token is an Ethereum token representing the right to use the Giga Watt's facility's capacity, rent-free for 50 years, to accommodate 1 Watt's worth of mining equipment power consumption. Essentially, this is access to professional mining – with an extraordinarily low entrance threshold. In fact, it could be compared to membership in an elite private mining club.
Tokens can be used in two ways: to host your own equipment and to rent out to Giga Watt's customers. If we just rent your tokens are, your income will depend on the rental fee you set (4.2-6.45 ¢/kW/h). Average annual rental income will be 37-57% of the token's initial value (if bought within the first two weeks of sales). If the tokens are used to host your own equipment, you will be able to save 56-66% of mining expenses, thereby increasing your mining income by 36-69% (depending on mining volume). For more detailed estimate please use our calculator at
https://cryptonomos.com/wtt/#/calculator