Seems like a fair deal to me – as JHW says, bike maintenence is bloody easy if you have a shed/garage/hospipe but it takes a ridiculous amount of time to do it if you reside in a top floor flat (with cream carpets), not to mention pissing off your other half when they find a cassette degreasing in a saucepan.
a tenner? why not? I might bumble down to evans tomorrow.
On the other hand, my cynical side says that once the bikes in the workshop, Evans will suggest a couple of new chainrings, a casette and a chain, or maybe a full service to boot. So pretty shrewd move by Evans.