The main objective of a physical map is to show landforms, bodies of water and other geographical features. Features shown include mountains, deserts and lowlands as well as lakes, rivers and oceans.
Depending on your electricity prices, a 400 watt HID will cost $200 â $400 each year of use, plus the cost of replacement bulbs. LEDs meant to replace 400w HIDs average around 180 watts.
1 Portable generators designed for an extended power outage start around $330-$1,000 but usually run $1,000-$2,000 or more for a medium-sized model (3000-6500 watts). 2  For example, the Centurion 5000 Watts by Generac sells for $650-$950. 3  More expensive versions provide more power and are usually quieter and more compact.