Firstly, I don't think most of you know Bter point (BTR), which is issued by Bter itself, so please have a look at this link http://cn.bter.com/trade/btr_cny . The present price for Bter point is about 2 CENTS in RMB.
Secondly, let's do a simple case study. Say you want to withdraw 10K Nxt, the fee for withdraw is 0.5% + 1 Nxt, that is 51Nxt. At the same time, this withdraw will cost you Bter point of your account. If you don't have BTR, you can buy BTR from the above link, and you can also get BTR from RMB trading in the site. If you don't have RMB, you can sell you coins to get RMB and then buy BTR. How many BTR will cost your withdraw? It's the quantity 10*the coin's value in RMB, say 10K Nxt's value is 4000 RMB, then the withdraw will cost you 40000 BTR, that is about 80 RMB or about 200 Nxt. So total fee is about 250 Nxt, that is ~ 2.5%.
Do remember and check you have BTR. That's my friends told me. So please check it when you didn't get your withdraw.