HF spindle sources

I have a smallish (6") precision XY stage from Parker Daedal and have
just got a Z axis sorted for it. It should be pretty accurate and I
intend to use it for some engraving and the manufacture of very small
parts.

What it does need is a decent high speed spindle. There is no point
sticking a Dremel on it.

Does anyone know of any HF spindles that will not absolutely break
the bank? It doesn't need to be excessively large.

Thanks

Graham