Can I pay with ETC?

They only accept BTC and ETH!! Read the website before asking this silly questions!

Wow, ok, bro..... Why you so rude? I just wanted to know, whether they accept or not.. Huh

Because this info is in open access and your question just create fud here! Raed their whitepaper and search website!!

Some ICOs allow alternative payment methods for big investors, even fiat, and I can afford it

How much are you going to invest?