Test Prices in Shopify
Has anyone figured out how to test prices on Shopify?
I can't figure out how to change the price variable so the new price carries over when an item is added to the shopping cart
The multi-page test feature is what you might be looking for. Unfortunately it's only available on enterprise accounts.
Regardless, I suggest not A/B testing product pricing. Imagine how a customer would feel if they pay one price, then open the site on their mobile phone, see the other version, and realize that they overpaid. except they won't think of it as "overpaying," they'll think of it as "getting ripped off." Might be some legal repercussions as well.
What you could A/B test is offering special discounts. In that case your experiment would just need to show a discount code, instead of affecting the price on every page.