You don't have to wait 30 days to turn the dispute into a claim. Obviously this person is not going to respond, so go ahead and escalate that baby now. Doing this allows eBay to get you your money back faster than if you sit around for 30 days hoping he responds. Once you escalate, he either responds or automatically loses out.
20% off Auto Accept on COMC Always On!
If you ask for a price/make an offer - please have the courtesy to respond.