I've got a pile of old rocks that used to be half the rockery and a
path...

I could freecycle them but I'm hoping to get some cash for them -
(Which I can then spend on something nice for my garden...) ... Any
suggestions as to where to look for people who'd buy them?

Loot? Supermarket notice board? Is it worth ringing some garden
places/rock sellers and see if they are interested?

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http://www.Voucherfreebies.co.uk
http://www.holidayunder100.co.uk