How can you just buy from one store or stick to one brand, this will only cost you money.
Take laundry liquid, when there are no offers about I buy Aldi's own brand and am quite happy with that. But if like today I see a good offer I go for it. Had to go to Morrisons today and always have a little look around and there was their own brand bio at £1.62p for 980mml ( half price). I have tried it before and was happy with results so I have bought it again.
Own brands and cheaper brands are a matter of personal taste and are always worth trying. Some you will like and some not. But do try as it could save you a lot of money.
I actually went into Morrisons for their own brand thin bleach at 29p for a 2 litre bottle. I use some of this to refill the Domestos spray bleach bottle. The best price I ever found for this was £1 for 500ml, now I use the own brand bleach and can refill the bottle 4 times saving £3.71p. does the same jobs for me so I'm happy. You could use a refillable spray bottle but do remember to label it well to avoid accidents.
Well that's all for now but soon be back with my shopping transport!!!!
best wishes wannabe frugal