Is Likessale a scam?
I'm confident to call it a scam.  

The same bike is on Amazon for $2162 to $3856 USD.

https://www.amazon.com/Diamondback-Bicycles-Podium-Vitesse-Carbon/dp/B01HHQ1BWA/ref=pd_lpo_sbs_200_t_1

Manufacturer gives it a MSRP of $3700 USD. 
To expect to pay 5% of that price is MASSIVELY suspicious.



Also notice the site lists MTB-style frame sizes (Small-15.5/Medium-17/Large-19/XL-21), where the bike is built in metric sizes (XS 50; S 52; M 54; L 56; XL 58cm)



I see the word "diamondback" never appears on the remote web site at all in text - it only appears on the bike photos which appear to be lifted from standard advertising materials.

TL;DR Yes its a scam.  Send your money at your risk.  If you ever do get a bike delivered, it will be an inferior knockoff product. 

Just don't.