Imailer is running two promo codes that cut your bill at checkout. The 15% off code for orders over $400 is the lead offer on the page, but if your basket is smaller, the 10% off code for orders over $150 gives you a saving on a lower minimum spend. The third through fifth offers are sale prices on specific product ranges: shipping mailers, packaging bags and cellophane bags.
On orders between $150 and $399: Use the 10% off code for orders over $150. On a $200 order, for example, this code takes the total to $180, a saving of $20. You would not reach the $400 threshold for the bigger code, so this is your best choice.
On orders of $400 and over: Use the 15% off code for orders over $400. On a $500 order, this code brings the total to $425, a saving of $75. This beats the 10% off code, which would save you only $50 on the same basket. If you have a mix of home and garden items and other products from Imailer, both codes apply across your full purchase, so the 15% discount works on everything.
On shipping mailers, packaging bags or cellophane bags: The sale prices listed (shipping mailers from $17.99, packaging bags under $65.29 and cellophane bags under $35.69) apply to marked down items only. If you are buying one of these categories alone and the marked down price is low enough to trigger the $150 or $400 threshold, layer the 10% or 15% code on top for a bigger saving. Check which discount leaves you with the lower total at checkout.
Choosing between the codes: Compare the final price after you add a code. The 15% code always saves more on baskets of $400 or over, but only the 10% code applies to orders between $150 and $399. There is no information on whether these codes can be used together, so use whichever one applies to your spend and gives you the lower total.