I will give some away, and many go into containers - also my "trays" only hold 32 seedlings - not the 72 that some people go with. (its still a lot of plants) It also includes vegetables, though I haven't gotten a lot of those going yet
WInter sowing isn't something I have had much experience with, and here in WI it makes for a really late start, so it doesn't make sense to me for annuals or vegetables. I usually have my Petunias blooming by the time I can put them outside, but I am a couple of weeks behind this year, and the spring is coming early, so that won't happen.