Good idea, but I'll keep using my local independent shop for all my refill products: https://stratfordobserver.co.uk/news/stratford-tesco-among-those-chosen-for-refillable-aisle-trial/

This is going to be price-dependent. I'm happy to buy refills, but all too often it makes more sense to buy afresh.

I tend to just buy rice, pasta & sugar, which costs a bit more but seems to be better quality. I also buy my laundry detergent & softener, which is biodegradable and about the same price as the equivalent in the supermarkets.

I've lost count of the times that a soap refill has been more expensive than a normal dispenser.