The page features the $150 off G10 Pro Wet and Dry Vacuum promo first, so start there if you want a fixed dollar saving on that model. The $150 off voucher at the top of this page is best for you when the G10 Pro is the item you are buying or when your cart contains selected products that match this coupon and you cannot use any other offer. The sale events are alternative routes when the specific items you want are already marked down.
Very large discounts on marked sale items. If the exact model you want is showing as part of the Prime Day Sale or the Up to 62% off event, use the site price for that sale. Those sales apply only to selected products. For example, if a sale listing shows 68% off on an item priced at $1,200, that listing price becomes $384 after the 68% discount, so you save $816 on that item. This is only available when the product page shows that sale price.
When you want the G10 Pro. The $150 off voucher at the top of this page applies to the G10 Pro and selected products. On a $799 G10 Pro, for example, the code takes $150 off, leaving $649 and a saving of $150. The voucher cannot be used with other offers, so it is the choice when that fixed saving beats any marked sale price on the same product.
Buying the H15 Pro Heat Wet Dry Vacuum. The 12% off H15 Pro is a model specific reduction applied on site. If the H15 Pro is $400, 12% off drops the price to $352, a saving of $48. Use the model discount when that item page shows the 12% reduction rather than trying a universal voucher that may not apply to that model.
Smaller purchases or first time contact. Signing up to the newsletter is a way to get special offers and promotions in future, but it is not the main checkout discount and it does not replace the $150 voucher or the sale prices on product pages. Use the newsletter signup only if you want email promotions for later purchases.
To choose between the applicable options, compare the final totals. If the product you want is explicitly listed in a sale at a lower site price than the price after the $150 voucher, take the sale price. If you are buying the G10 Pro and the $150 off voucher applies to that listing, use the voucher because it is a fixed saving and cannot be combined with other offers. In all cases, pick whichever option leaves you with the lower cart total; do not try to combine the $150 voucher with site sale prices because the voucher terms say you cannot use it with any other offers.