Best cyclocross bike under £1000 and other CX chat

Selling a pair (i.e front and rear) of Avid Shorty Ultimates shortly. No brake pads and could do with straddle cables being replaced (they use standard road cables for these). To give an idea of usage they've just worn through the original pads. A few marks but nothing serious, got some spare grub screws for the carrier I can throw in too (these are liable to rounding).

£60 seem fair?

Very. In my experience, these are by far the best cantilever brakes available.