some have sent me as few as 6 seeds tho i try to make my numbers fairly known in the trade (you send out 35 of say cherry bomb peppers and get back say 6 chilitepin i dont know bout you but to me its somewhat dissapointing if there seeds have no germinatiion rate or something goes wrong what are you to do?)

ok ill hush

One can list and trade their seeds in any increments that they want, so long as their trading partner knows ahead of time how many seeds are being sent.

Some folks will say" I send 1/4 or 1/8 ts for small or tiny seeds."
Well that is fine except in those cases where the seeds are like dust as is sedums, butterfly bushes, or rose moss.

Some things that are frequently traded in lesser amounts (than 25) include such things as
tomatoes-often tomato growers would much rather grow numerous varieties of tomatoes than 25 of any one kind.
Morning Glories-some of the more 'special' ones, either commercial or saved from seed, are often traded in quantities of less than 25. The Japanese morning glories produce fewer seeds than the more common ones.
Trees and shrubs-often less than 25

There are just a few examples. You can read more about quantities at Fewer than 25 seeds???

Here is the FAQ from The Winter Sowing Forum FAQ How many seeds go into a packet for a trade?

In the future, if you have questions, the best place to look for an existing answer or to ask about seed trading, is the Conversation side of The Seed Exchange. The link to Conversations is found just above the list of threads on the exchange side of the forum. To search the forum, use the search box found just below the list of threads as opposed to the box at the top of the page. That will yield search results for just The seed Exchange as opposed to all of the Garden Web Forums.

Sue