Oh yes, the END is less than £15 - but then there is the fitting - remember, if the 'old' one is rusted on tight...
I had that problem recently, couldn't get the tracking sorted as the tyre place couldn't crack the nut. Ended up taking the whole rod out & buying a new one (that's the end plus the rod). Even off the motor, no amount of heat & forcing would shift it.
Cost me a damned sight more than a handful of grease.
But hey, if you've got money to burn & over half a day to waste - not to mention being without your motor while it gets sorted...
I get what you're saying, I really do, but the risk/reward balance is one that I'm comfortable with. One of these days I'm actually going to buy myself a set of wishbones, tie rod ends, rack ends and all the wearing bits in the suspension and just have them sitting on the shelf waiting for the day when they might be needed, or when I fancy taking the car back to that factory fresh feeling