iNexQ IST050T is a cheap router with Silicon Data International Co., Ltd. StarGate SD9148 200 Mhz, MIPS R3000-based SoC, Realtek 10/100, and 64MB RAM (?). Already runs linux, violates GPL. INEXQ is apparently out of business, though UNEX (their predecessor?) is still around.
Dingxing (Topstar) TE-SR400 and Shenzhen Baolong HL-RT8268 routers also use SD9148 processor.