StarDreamer
There are things I never thought about.
Like if one wants to grow some houseplants and even the small bags of seed compost are too heavy to lift now. Years ago I picked up the large bags with ease. But now is not years ago.
They just don't seem to sell 2 kilogramme packs of seed compost. If they did I could buy several and get them in one at a time.
I wonder if such a product would sell well,
I can imagine the idea being dismissed as "niche" but I just wonder if there could be a huge market for it.
So I bought a growing mint plant from Tesco, and it was delivered with great care. It is in a plastic pot in some seed compost. Tesco sells them with the idea of people picking the leaves off and using them in cooking. But I bought it to be a houseplant so I have not done that at all. It is thriving.
At the risk of meandering?♀️, I was perplexed by your use of the words seed compost in the context of potting on houseplants, if I read this correctly? (2 litre bags at Waitrose, e.g.)
If you are repotting houseplants, would you not be better buying a multipurpose compost? A cursory Amazon glance (only) shows these are available in smaller bags.
I am not sure whether Tesco would add compost to your grocery order, in fairness.
A big bag is obviously more cost effective.
You have mentioned the help given you by Age UK in the past.
Maybe they could get you one in?
Or any of the gardening centres/superstore types?
If you don't want to be saddled with a huge bag, you could buy one, decant what you want and offer the rest locally.
I know that schools, allotment societies, community gardens welcome this sort of assistance. You could chose a worthy home on Freecycle.