I have had some electrical work carried out with new buried trunking meaning I have a need for a small volume of F&B 'Slipper Satin' paint to make good the plasterwork repair. But I only need to paint one small area, certainly not justifying a whole new can of paint! I'm guessing a couple of hundred mls would be sufficient. Is there any website that enables me to source a small volume of a specific type of paint? We had a part-used 5 litre can left over when we originally carried out the work, and by 12 months, it smelled like rotten eggs and was binned. Knowing that this paint has a definite (and quite short) shelf life, I'd have gladly given away the excess last time. How do I find people in the same boat who might be able to help me with my small volume requirement?