Guineas
Hi Jon,
A Guinea was one pound one shilling.
1 Pound was worth about $2 in 1966 when we decimilized
1 Shilling was worth about 10c.
So in theory 218 Guineas was $457approx in 1966 AUD.
In those days you could by a car for about $1600 or a house for about $10,000. So $500 was a lot of money.
With inflation etc that 218 Guineas is about $4600 in todays money.
My favorite detergent in AU is Radiant Matic atm, I've tried OmoMatic, but it seems to generate oodles of suds

Not to mention the fact, that if you buy the non conentrated version, you're supposed to pour 2 cups worth in. (I dont think my Miele dispenser can hold that much powder.

)
I use Sard as a laundry booster as well, although now I've got a washer with a builtin heater, I find its not as necessary as it used to be.