Thanks LoreD, and the others, I didnt know Terre De Semences still existed in the UK , I used to get their catalogue about seven years ago and realy liked them- but they suddenly put up the price of their catalogue to a whopping £10.00 english money just for the catalogue, so I didnt bother any more after that, pehaps by now they might have made the price more reasonable, -if so I shall definatly try them again.
But as Carolyn and the others say, seeds-by-size prices are a bit steep, and all the rest of the calculating details within the pages are somewhat confusing, so maybe I will put them on the back burner for a while and try Terre De- Semences again.