Hello there,
For stable sales, your items must be remembered, they must evoke emotions (nostalgia, tenderness, delight, or even fear and disgust if it is some kind of monster or asset for a horror game). What emotions should a kettle, coffee pot, laptop or traffic cone evoke in me? What should make me buy this given all the difficulties that TazMan2000 described. Why should I recommend this kettle to my friends and post it on social networks?
If the models are combined into a collection of 6-12 models, it is worth making a discount of around 30%. A discount of 3-5% is a bad motivation for buying and saving money.
Regards.