This chemistry seems ideal for the (very) low level user: sold in small batch sizes and good shelf life of concentrates. Price is good on the Maco site too. I wonder if it'll be available from a UK supplier soon, Maco has a 50€ minimum purchase rule.
Have a chat to Ag-Photographic. They buy stuff direct off Maco, then resell in the UK. They either may have it or may be able to stock it
"Flatter Me, and I May Not Believe You. Criticize Me, and I May Not like You. Ignore Me, and I May Not Forgive You. Encourage Me, and I Will Not Forget You."