Epson Salts - cheapest source?

Hope this is the correct board to post on (as I wouldn't class as a fertilizer).

I couldn't find my Epson Salts so resorted to an emergency purchase from Wyevale(!) at about £4.40'ish for only a Kilo which seemed horrendously expensive. I'm sure I've bought it on ebay for much, much cheaper than that, but it seems just as expensive there.

Amazon sell 'medical grade' ES @ £19.95/Kg for 10 Kg, so only £2/Kg http://www.amazon.co.uk/dp/B00D3YR6...TF8&colid=1CVRB2TYJJZQW&coliid=I2HN35UVCW8U76 and 'food grade' @ £ 39.99 http://www.amazon.co.uk/dp/B004VMS3...TF8&colid=1CVRB2TYJJZQW&coliid=I19EZA8F2JOAGF

I'm tempted to go with the first one, unless anybody knows of something cheaper.

 

Boots, I don't use them often enough to buy a large quantity
http://www.boots.com/en/Boots-Epsom-Salts-B-P--200g_1209183/

 

Darn it Scrungee! I just got a load delivered and didn't keep the delivery note. I'll see if I can find some record of it somewhere though. I use a lot of it so I get it in large amounts.

 

That's £7.45/Kg compared with £2/Kg from Amazon!

 

I know but don't need kg's of the stuff
I only use 2 tablespoon per watering can
Only used 8 tablespoons this year.

 

Got mine from here apparently. http://www.epsomsalts.co.uk/

 

Thanks, that's where I'll order 10 Kg from.

I use about 1 Kg per year getting 100's of plants looking their best before selling.

 

Well Epsom salts seemd to be the "in" thing at the moment . What is its use in the garden though ?
http://www.dailymail.co.uk/femail/article-2367451/Granny-right-We-need-dose-Epsom-salts.html