Is it offensive to ask for decanting videos?

Found some deals on Facebook for a few 10ml decants and asked for decanting videos from the seller. This was his response.

To be honest I was hesitant to ask for it, thinking it might cost extra effort on his part, but didn't expect I'd offend the guy. Am I really in the wrong here? Pls any tips on how to navigate buying stuff through such communities would be helpful.