how much is a sheep worth in your place

Here at the moment we are getting 90$ for a 50kg sucker
60$ for a 50kg old lamb
40$for 50kg sheep
all prices have fallen 20%+ in 12 months

I am not sure about all your terms, but here in PA, USA, the lamb prices were great as of 6 months ago. We were getting close to $200/ head for a 6 month lamb (approx 100 lbs). I now get the same amount for auction culls as I can get for top breeding stock--it's odd.

Very ironic. After I left my post above I just got the following notice. Apparently I sold my last lambs before the crash that has happened. I was not aware of this.

http://www.premier1supplies.com/sheep-guide/2013/01/national-lamb-feeders-letter-to-the-sheep-industry/?source=targetmailer&utm_source=sheep-target-promo&utm_medium=target-email&utm_campaign=2013-01

I just picked up an unproven unregistered 6 months old Ram for 100 $.
The breed one year old ewes I bought last year were 200 $ each.
A guy had a registered two year old dorper ram, three ewes, and one lamb for 500$. Sale barn prices float between 90 $ and 110 $ for 6-7 month olds.

What about the wool
Our merino is bringing 8-15$kg
Xbred 4-5$/kg seems cheap when a jumper is over 100$
and they use cheap labour

Hand-spinning fleeces command a fantastic price still, even in a sluggish economy. I sold my purebred Corries fleece for up to $21/lb (about $150-$220 per fleece) in 2012.

http://woolyacres.wordpress.com/fleece2011/fleece2012/