Anyone got a decent kimchi hookup?

Every time I buy it in this country, I seem to pay about £3 for half a tablespoon of vegetable matter and a pint of juice. Recently went to Birmingham Chinatown and the Korean buffet had a massive platter of the stuff, as well as it being featured in a lot of the dishes

Does anyone have an idea how I can achieve true abundance without resorting to making my own? I feel like it should be sold in similar quantities to sauerkraut, which is inexpensive and readily available but it seems to be on a par with manuka honey