Hey there, @Steven68
Bo here from Shopify Support!
Great question. Shopify's plans remain the same throughout the year. We do not offer discounts based on the season. Stores across Shopify do usually put on sales for this season if that is what you are referring to. This would be done on an individual level and would not be compulsory across the platform.
Let me know if there is anything else I can assist you with, I'm happy to help!
All the Best,