Close, but "add 25%" is the second most common mistake - it undershoots, and the arithmetic is sneaky.
Add 25% to a ₹200 item and you list at ₹250. But the platform takes 25% of the LISTED price: 250 minus 62.50 = ₹187.50. Still ₹12.50 short. The right move divides instead of multiplying: listed price = your price ÷ (1 - commission). So 200 ÷ 0.75 ≈ ₹267. Now 25% off ₹267 lands you back at your full ₹200.
Two more lines before you relist. Platform packaging is usually sturdier and pricier than pickup packaging, its cost goes inside the listed price, grossed up the same way. And re-run the numbers every time they revise commission or add a fee category. They do.
Also... it's completely normal for your platform price to be visibly higher than your direct WhatsApp price. Customers get convenience pricing, and it quietly trains regulars to order direct where you keep everything.