Dean will usually always get back to you, it just sometimes take him some time.
After six months of waiting for an answer, I gave up on him.
It's been a month for me at this point so I think I'll be moving on somewhere else. Nice guy, we spoke several times, but when it came to crunch time, we lost touch. I e-mailed him last week and asked if he was still interested in selling me something, no response. I'm a nice guy, easy to work with, patient. I think that a month is patience enough.