After 54,000km, do you even need to ask? Whatever the SJS chainring costs, it's a bargain.
Probably be smart to replace your chain and sprocket at the same time, unless the sprocket is very little worn.
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If you are ready for a change, a popular fitment on this forum is the Surly stainless steel chainring with the Hebie Chainglider. Who knows whether it will last longer than the SJS chainring? But the combo will be cleaner and require less maintenance.