If dead on arrival then I would expect ebay/paypal to get you your money back
That's not quite the same as a proper warranty though is it? What if your second hand router works upon receipt and then develops a fault X months later? I very much doubt ebay or paypal would refund you as the item was received in a working condition.
If the OP wants a cheap as chips router similar to a second hand Zyxel VMG8924, but brand new and with a warranty, then he should consider something like the TP Link TD-W9970 which i think uses the same Broadcom DSL chipset as the Zyxel anyway, for £35 from Amazon. Alternatively he could use the TP Link in bridge mode and hook that up to the best standalone router, the Netgear R7800 for a top class setup.
FluidOne FTTP On Demand 330/30 Mbps
Edited by baby_frogmella (Sun 10-Jun-18 21:53:14)