Yes, you need ASICs to mine. Mining on a graphics card takes several million years to mine one coin.

There are two types of cheap ASIC devices.

Cheap per device: These often cost only 10 USD. But they only do 1 or 2 GH/s which means that they are extremely expensive per GH/s. You would be lucky to earn back 10% of the price of the device.

Cheap per GH/s: These are more expensive devices. But they are cheap per GH/s and can make a profit. Have a look at Antminer S7 plus power supply at bitmaintech.com - that's not a cheap machine but you can calculate the price per GH/s and use it as a base for comparison. Have a look at ebay and similar places for older Antminer S-models, kncminer, spondoolies, etc. Compare to the GH/s price of the S7. If a machine doesn't come with a power supply then always factor that into the GH/s price.