Was in my local Tesco Extra (hull city centre) yesterday just as a great deal of fitness items were getting reduced.
Items include; 'Jaxjox kettlebells'
£1.60 for 4kg
£1.80 for 6kg
£2.00 for 8kg - which is £24.00 full price on Tesco direct.
Also abs rollers reduced to £1.60 from around £4.20
Small 1kg hand weights were 60p with 2kg ones 90p.
I also picked up a set of two contigo bottles; one water bottle and a flask type bottle for £2.07 which are selling for £23.00 on Tesco Direct!
Many other items highly discounted, might be worth checking your local stores :-)