Organisers hope that around £2.5million will exchange hands at the Kelso Ram Sales.
More than 5000 rams have been entered for sale.
It's the 175th year of the famous sales, organised by the Border Union Agricultural Society.
"It has just grown with tradition over all these years and it actually has become the barometer sale of commercial ram sales for possibly the whole of the UK. I always say to everyone I know they should always experience the ram sales once, it is unique."
More top news
Carlisle's annual giant puppet parade took place in the city centre this afternoon.
Hundreds of young muslims were in Keswick today as part of a bid to raise more than half a million pounds for UK charities.
One of the biggest events in the calendar for the Scottish rural community has been taking place at Drumlanrig Country Estate.