What would you price 2 oz and 4 oz slimes?

I have been selling 2 oz slimes for $2 and 4 oz slimes for $5 at craft fairs. Each slime theme usually has some kind of add-in, every one comes with a charm, and I sell various textures (icee, cloud, jelly, clear, tng, snow fizz, etc.). What is your opinion on pricing 2 oz and 4 oz slimes?