This is a very good price and might stay for some time. I saw a TV ad mention this as low price for spring. Price was still showing as $12/kg online on Sunday 20th AEST but now updated as we have moved to Mon 21st AEST. Note that even the old $12 /kg price was a recent low and it was earlier $15 since some time, with the $12 price an occasional weekly promotion.
Current Woolies Price looks like $10/kg across different weight categories
https://www.woolworths.com.au/shop/productdetails/764979/lam…
Coles for eg. mentions the $12/kg price as "dropped and locked" till Aug 29 and mentions the $15/kg (was $42 for 2.8Kg) as old price few months back in June.
https://www.coles.com.au/product/coles-lamb-whole-lamb-leg-r…
So we'll have to wait and see by month end if Coles goes back to $15, stays at $12 or matches Woolies at $10 (most likely I guess)
Either way a pretty good price at $10 for now at Woolies and hopefully soon at Coles too
Enjoy.
Given Sheep and Beef pricing is at 2018 levels at the farmers gate, you can expect to see some drops in retail pricing