Good Morning
Don't worry Plunquet,wills can be quite confusing but in this case the answer is quite simple.
After 1858 in England and Wales there is a online index and each will costs about £6 to order.
Before that the Will will have been proven by the Bishop and stored at that counties archives,unless they were mega rich and had land in to dioceses.
So William Wade's should be in Worcestershire and stored at Worcester.If you visit you pick up the index a A4 booklet in alphabetical order of the shelf ,find the year and will number then look it up on the microfilm for that year.All free of charge.
As you live in New Zealand I doubt you'll be making a trip so it's a matter of contacting the archives and getting them to make a copy.They print it off microfilm at 80p a page last time I asked ,so it will be quite expensive before you add on their time.They're quoting £7 for the first page on their website.And research comes in at £20 per hour,hopefully they won't charge you that.
Their contact is hiveadminteam[-- at --]worcestershire.gov.uk and they are called The Hive(the building looks like a giant bee hive).
Hope that helps and you have some look with them.I had a quick look at Old Swinford parish records up to 1809(the parish for Stourbridge at that date ) but no Wades.so I'm afraid i can't tie down the date of his death.
All the best
Ciderdrinker
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