1x 20lt bag Of Osmocote Slow Release fertiliser
R.R.P $105
Sell: $45
Enough slow release fertiliser to last you a lifetime!

just pulling your leg sid20 kg only lasts about one year. Does this mean I am to have a very short lifetime Sid?
Osmocote does go a long way and I find it is a great way to provide a background fert level even when I forget to fertilise as often as I should. I always add osmocote to the potting mix before using it which, as you point out explains why even large bags don't last me all that longI'm sure most ausbonsai folk would not use this amount in 12 months
When the bag is empty your time is upEnough slow release fertiliser to last you a lifetime!