Wanted: MTB wheelset - cheap! Ideally 7-speed

Hi,

My mates old 90s dawes mtb wheelset is the worse for wear.

I patched it up a year ago with buy replacing a of the broken spokes, but the rear has had a couple more go.

This is it:

I'm not really sure it's that worth replacing any more...

... so does anyone have a spare set knocking around?

• rim brake compatible
  
• cheap
  
• ideally 7-speed screw-on, or with a 7 speed cassette included(?)
  
  

^ I think based on some guess work.

Cheers.