Teaser 2741: Neater Easter Teaser

From The Sunday Times, 5th April 2015 [link]

In my latest effort to produce a neater Easter Teaser I have once again consistently replaced each of the digits by a different letter. In this way:

NEATER  LATEST  EASTER  TEASER

represent four six-figure numbers in increasing order. Furthermore, the following addition sum is correct:

What is the value of BONNET?

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