Yes half a tonne was a lot ,I must have wrecked a few hundred mowers in that lot.
I haven't picked up many either Norm in the past 3 years maybe 10 ,threw out a lot of good red rover bases just didn't have catchers for them and even if I sold good running mowers for $20. it would still take too long to sell so I don't have that amount of time to get rid of them and no one wanted a good complete mower base with wheels but without an engine for $5. I've seen guys with 20 Victa 2 stroke mowers for $2 each and they don't sell they just go to scrap in the end.
I see a lot of people going electric around here and a few houses up from me there is a robotic lawn mower.
I'm Just keeping engines and wheels off the later rear discharge mowers.