Nothing wrong with the mechanism at all, does exactly as it should. Purchased on a 43% off offer. The reason for the poor feedback was the conflicting information between GSF online and my store collection point. I.e being told that the item was ready for collection online and getting to the store to collect during opening hours and finding it very shut! Phone the store the next day to now try to now arrange a delivery as I couldn't collect during their opening hours. (the order would only be held for a day) and get told the only way to now do that is to cancel the item and re order, which would do away with my 43% discount code. Needless to say I had to take time from work to keep the offer (let's face it who'd turn down 43% off) and go and collect at GSF convenience to get my discount. I'm not being a cheapskate but it was made far harder than an online order ever should be.