The first order takes ages to put together after that you can put an order together in no time at all.
Each variety has a 2 letter price code by it elsewhere on the page is a price list you look for the relevant code & it tells you how much it costs per 1/4 gram 1/2gram etc... You decide what weight of seed you want & add it to your order.
As an example the Protovoy cabbage you were looking for earlier are code (aq) which means they cost £3.12 for 1/4g £4.56 1/2g £7.76 1g etc.. so if you wanted 1g of them you would write on the order form:
QUANTITY KIND VARIETY NAME COST
1gram CABBAGE; Savoy Protovoy £7.76
I find it simpler to print out an order form fill it in as you go & order through the post rather than mess about emailing the order through & paying with paypal.
If you can restrain yourself to spending less than £15 (I haven't managed it yet) you have to pay £1.50 postage otherwise it is free postage in the UK.
If you get really stuck then you email John (his emails on the homepage) & tell him what varieties of seed you want & how much of each and he will work it all out for you.