# Cost

$$
Construction\~Cost=\[Lay ~~007~~Robot
*n] +\[Orb*{n}\*y\_c^2]
$$

$$
Orb\_{n}=Lay~~Mining~~per\~Day\[Lev.2]\*{\sqrt {Lay\_{p}}\over \ \sqrt {Orb\_{p}}}
$$

$$
Lay\_{p}=Lay~~Price
\Orb\_{p}=Orb~~Price
$$

All costs for buildings are determined by the formula above. The cost is based on the amount of $Lay 007 mined. Because it is based on the amount of Lay mined, the Lay value is a fixed cost based on the tier and level of the building, but $Orb is a variable cost. The reason for the variable cost of $Orb is that when the price of $Orb is high, it is unlikely that further construction or upgrades will be triggered.

#### Construction Cost

| common  | rare    | epic     | unique   | legendary |
| ------- | ------- | -------- | -------- | --------- |
| 1 Robot | 3 Robot | 12 Robot | 72 Robot | 642 Robot |

$$
y\_c=25
$$

#### Coefficient of x and y for each tier & level

| Lev   | common | rare | epic | unique | legendary |
| ----- | ------ | ---- | ---- | ------ | --------- |
| 1 Lev | 1.00   | 1.12 | 1.24 | 1.36   | 1.48      |
| 2 Lev | 1.04   | 1.16 | 1.28 | 1.40   | 1.52      |
| 3 Lev | 1.08   | 1.20 | 1.32 | 1.44   | 1.56      |

The table above shows the coefficients by Tier & Level for the values of x, y. In other words, the values of x, y increase as the level and tier increase.

{% hint style="info" %}
**Note: Please note that all figures are subject to change by governance.**
{% endhint %}

{% hint style="info" %}
**Note: The prices of $ORB and $LAY are based on a 24-hour moving average.**
{% endhint %}

{% hint style="danger" %} <mark style="color:red;">**Note: Keep in mind that all tokens and NFTs spent on the upgrade are irrevocable and non-refundable.**</mark>
{% endhint %}