You could as well have a look at the compaq MX 11800.
They have MX browns, an integrated trackball, even PBT caps sometimes and you can find them for around 25£ usually. It's a g80-1800 style layout, so not exactly your standard layout but it's easy to catch and at that price that remains a very good starter board. Thing is, it usually has PS2 connection only so you either need a PS2 port or an adapter.