Shopify Plus starts at $2,300/month on a standard three-year contract. Compared to the Advanced plan's $399/month, that's roughly $1,901/month in incremental cost, a number worth sitting with before assuming the Shopify Plus advantages covered above automatically justify it.
That incremental cost needs to be weighed against two things: transaction fee savings (meaningful mainly at real volume) and the value of features you'll actually use, not features you like the idea of. This is where an uncomfortable but genuinely useful stat comes in: most merchants who upgrade to Shopify Plus report using less than 40% of what they're paying for.
That gap is almost always a knowledge or planning problem, not a platform limitation. Teams upgrade, don't build a plan for using B2B, checkout customization, or expansion stores, and end up paying enterprise pricing for what's functionally an Advanced-plan workload.
Here's what the math actually looks like at a mid-tier volume. Take a store running $200,000/month in GMV through a third-party payment gateway on Advanced, paying a roughly 0.5% platform transaction fee, that's about $1,000/month, or $12,000/year, on top of standard processing.
Move to Plus, where that platform fee drops to somewhere around 0.2%, and the same volume costs closer to $400/month, or $4,800/year, and a $7,200 annual saving. Set against Plus's $27,600 annual cost at the standard three-year rate, transaction fee savings alone don't close the gap at this volume, you're still roughly $20,000/year behind before counting anything else.
The math only starts working in Plus's favor either at meaningfully higher GMV, or once you add the value of features you'd otherwise pay for separately, consolidating four or five apps that each run $50–$150/month for functionality Plus includes natively can realistically close several thousand dollars of that remaining gap on its own.