Selling a domain

I bought a domain a couple of months ago. I thought it would be a cool name for a vaporizer store. . no website there, don;t bother.

fast forward to Monday of this week and some guy is trying to buy the domain from me. Out of the blue he makes an offer of 1k. I look up the guy and he owns a change of vaporizer stores on the east coast, including one in manhattan. Their current domain name is horrible.

How much would you counter offer with? or would you just take the 1k?

are you planning on opening a vaporizer store? or did you buy it to sell to one exactly like this?

I was going to use it on my vape site. I’m not married to the name tho.