Yeah I don't understand why the difference is £3/2.5kg and £13.50/5.0kg for unflavoured and flavoured. But with these new prices, it's a tad annoying to be honest. Granted I'm very new to all of this and I've recently finished my first 2.5kg bag of Reflex One Stop protein which I bought for £33.
Reflex One Stop was good but I had the vanilla flavour which is absolutely disgusting! Everytime I had it I was almost sick, I tried to drink orange juice straight after I had a swig of it and it made a bit better but still horrible! It was also very filling and made me feel really bloated afterwards.
I then bought a 2.5kg of Myprotein Unflavoured Impact Whey for £20 a few weeks ago and started that this week. I have to say it's delicious with milk, you cannot taste the powder, it mixes very well and just tastes like milk. I then added Nesquik milkshake powder (banana flavour) and it literally tastes like banana milkshake so I'm happy I've found a cheap and perfect protein shake to have!
I've also blended a banana a few times. So 75g of protein + 300ml of milk + a banana + nesquik milkshake powder = around 90g of protein for a breakfast shake, not bad I think considered the last 2.5kg protein powder I bought cost me £33 and was horrible.
But the prices have risen now:
Impact Whey Protein Unflavoured - 2.5kg - Was £20 now £27
Impact Whey Protein Unflavoured - 5.0kg - Was £35 now £40
Luckily I was reminded of the price increase on this thread and ordered 10kg of Impact Whey Protein Unflavoured for £66 which just arrived by post so I saved around £10 before they increased the prices.
10kg of protein plus the 2.5kg I already have (12.5kg total) should last me a few months, I take between 90g - 120g of protein powder per day so around 140 days/shakes (4.5 months) of protein left if I take on average 90g of powder (75g of actual protein). Which cost me around £88 in total, works out to be £88/140 shakes = 62p per 75g protein shake = 0.83p per gram of protein.
I've read that a good amount of protein to take is 0.8 x weight in lbs so I'd need to take 112g of protein since I'm 140lbs. 0.83p x 112g = 93p in whey protein to meet my requirements. Obviously I'm not going to do that, I take 3 scoops (75g of protein) only along with chicken/tuna/eggs each day.