tickets and hotels of Mt. Taishan , i will be very thankful for useful info

Yes, there is office selling entry ticket, and bus to Mid Heaven Gate at Tianwai village.

The village is about 2.5 miles far from Dai Temple. Bus K3 is running beween the two places; ticket fare is CNY2.

There is a CNY30 admission fee for Dai Temple. For other temples on the mountain, it's free.

There are hotels on the top, but very expensive, CNY700-1000 per night.

It's cold in the late night. You can hire a tent, about CNY50-100 per night.