I've been after one of these for my wife's Christmas present. She goes running every morning and it basically has sat nav built in and a heart monitor so measures exactly how far you've run and calories burnt etc. rather than counting steps.
I had ordered it from Amazon for £130 which was the best price I could find. However, they let me down badly by changing the delivery from next day Prime (I ordered on 17th Dec) to 31st Dec - what a joke, thanks for nothing Amazon. So I had to find an over the counter supplier. Argos wanted £199 for it. But then I found it in Halfords for £154.99 - an extra £25 on the Amazon price but still not bad for a last minute purchase.
However, they've classed it as a bike accessory so it is included in their 3 for 2 deal so I've reserved 3 for £309.98, collecting this afternoon from Halfords. I can then knock the other two out for £110 each on Ebay and still be cheapest on there by a mile. making the last one about £100 all in.
OK, not the greatest or easiest deal in the world but if you are in the market for one of these and are confident selling on Ebay, it is the cheapest out there. Most importantly, the item is in your hand today if you can find a store with three in stock (I had no problems.) Thanks Halfords - you saved Christmas!