I think eBAY sellers can be a bit slack getting things posted in the first place sometimes but still that is a long wait for you.
Well yeh, I'm guessing it's just the seller. Another item I got from another seller only took about 10 days. I purchased the Celestron NexImagine imager due to it being lots cheaper then any of the prices I had seen it for in Australia. But then I saw it cheaper then what I paid for it right here in S.A
just last week.