One thing I’d add is to be careful not to treat markup and margin as the same percentage.
A 2.5x selling price means the price is 150% above cost, but the gross margin is 60%.
For example, if a product costs 100:
2x price = 200 → 100% markup, 50% margin
2.5x price = 250 → 150% markup, 60% margin
3x price = 300 → 200% markup, 66.7% margin
I find it easier to decide what gross margin the business needs first, then calculate the selling price backwards from that rather than picking an arbitrary x2/x3/x4 multiplier.
The other important part is what you use as “cost”. If freight, duties, packaging or other landed costs materially change the real cost, using only the supplier unit price can make the margin look healthier than it really is.
For a premium brand I’d probably treat the target margin as a commercial decision based on category, acquisition cost and positioning rather than assuming there is one correct markup multiple.