All my "major" purchases are a sort of project – they have to be introduced then the hints have to be cranked up a notch or two until it's time to "strike."
I have got in trouble before though – we share everything 50/50 which suits me 99% of the time.
Probably my RC car that started off costing just over £100. By the time I'd faffed around sorting bits out it was more like £300.
Same with my MTB – I think wife thinks it has had about £500 spent on it. Inn reality, double that and add a bit more…!
I will also be "forgetting" to say quite how much I'm about to spend on a front light too…
Hey, she might like the boat though – my wife loves ours!