I know the cost of hardware and supplies here versus UK has been discussed before.  However, just as an additional bit of info:-  I needed a 50m roll of 60cm wide wire netting (chicken wire, hexagonal pattern) to keep the rabbits off my roses and veggies.  I went in Cifec at the top end of Amposta and was quoted €129 (but discounted to €109).  I thought that over €2/metre was a bit steep so I left it.  I looked on the net for UK prices which came out at about £47.
Tried in Hierez today but they don't stock it.  The lad behind the counter gave me name and directions to a Ferreteria.  Nice chap who apparently has been running the business with his mate for over 40 years.  Anyway, upshot was same product (same manufacturer) for €57 (about 50 quid).  I was so chuffed, I bought another couple of items while I was there.
In case you don't know where I mean, the name is Ferreteria Adell.  Directions:- (on foot, bit more complex by car because of one way system)..... Rambla de Catalunya (from Corona Hotel roundabout) past Lidl on your left.  One and a half blocks further down on the right opposite Carrer d'Alacant.  Very small old fashioned shop, very helpful guy (Gonzalvo and his older buddy Gauxachs).
For what it's worth,
Longdrop