Wilkinsons do a great own brand selection at 3 for 2. I've never had a problem with them.
Around here we swap exceess seed for other ones from friends and neighbours.
Who wants to grow 50 butternut squash plants anyway!
We also swap seeds collected from our own plants, ditto cuttings.
Available instore or online
http://www.wilkinsonplus.com/bin/ven...archsubmit.y=0