How long is the slow boat from China?

The latest from my Ebay "supplier" is that I will have my router "soon". And still no explanation for the delay.

For all I know that means "never". And if it is "never" I want to order another one from a reliable supplier. But I don't want to order another one and then find myself with two of them if I am being unreasonably impatient.

I have the impression that lots of Forum members have bought stuff from China and I would love to get some idea about how much time I should allow before concluding that my router is not going to arrive.

...R