2023 - Seeds and Stuff I've bought/acquired

I've tried that in the past but it involves weighing, then searching a website, and I soon lost the will to live.
Maybe a pot of homemade jam/chutney is also 50p. Start counting when the jar is opened, not when its made.
Herbs wouldn't count unless there was enough to dry for a jar.
Food that's been frozen wouldn't count until they were eaten so my box of frozen raspberries would last for 2 breakfasts so that's 50p x 2.

Just making this up as I go along!

This sounds like a doable plan (unlike some others ).  I fear, like I've always thought, my garden doesn't pay for itself, but I can't put a price on the excitement of sowing and harvesting. That's why I always feel its worth it.
When do we start, 1st January?  Also do we have to count in the the consumable stuff we use but have purchased previously, or does that become too complicated? I was thinking coir and vermiculite, fertiliser etc.