I don't think the FCC ban is really effective anyway. I was able to easily order a foreign-made router recently from the same reseller I've used in the past.

Also even if they did police the retailers for router sales, I doubt anybody on eBay is going to give a shit so there will be lots of routers for sale there.

The FCC ruling prohibits the sale of new models of consumer router. It doesn't forbid the continuing use of existing routers or, if I understand it right, the continued sale of models that were already on sale. So you can continue to use existing models as WAPs or routers. But when the tech and the security moves on the FCC wants the USA to be left behind.