First of all, this deal isn't for everyone, if the idea of paying this much for measuring cups makes you balk, Anko ones from Kmart will measure just fine.
Difficult to get RRP because the 8 piece set (4 cups and 4 spoons) is only available at Amazon and the price fluctuates, most of this year it's been above $60.
According to Peters of Kensington the current price for the spoon and cup set is 48.99 and 29.99 making $78.98. Somehow their RRP is $115.9 ¯_(ツ)_/¯
Either way, if you've been watching this well made set of measuring utensils that have a magnetic lock, then now is a good time to buy.
Just to let people know, these are the American ones, an Australian teaspoon is 20ml, not 15ml.