Most winter seeds have germinated beautifully in my garden. I used 70% cocopeat, 30% vermicompost and a teaspoon of fungicide to protect the seeds.
Keep the seeds in a greenhouse condition. I personally placed them on moist cotton beds in a small transparent sauce container and left them alone for 3-7 days under the sunlight. Once they start germinating, trasplant them into soil and maintain the greenhouse condition for faster growth. Water frequently and make sure the soil is always MOIST. Not drowning with water or dry soil. Poke holes into your container for water drainage and air supply.
Do Not Delay and buy quickly before their viability ends. Seeds germinating viability depends from plant to plant and also on seasons.