Depends on the amount of use it gets. Mine, and most of those I knew back in the day had brand new gear.
Some that had had very little use, such as a particular weight of saddle, might be 'second-hand' in the early stages of a young riders career, but certainly not in poor condition. And they would always upgrade once they became busier.
One trainer used to give the boys her credit card to go to Garrards and get what they needed.
It was the rule then that trainers provided both gear and accommodation, and all costs when travelling.
One of my lads used to take his girlfriend along too, it took me a wee while to click on to just why his accom. costs and/or plane fares were rather excessive!