is it possible to use more than one coupon for the same order ? also there is another type of coupon that has no expiring date can i use it with the temporary one(ends on 31 Jan)
From the web site:
1. Purchase coupon, post-sales coupon and order coupon cannot be used in the same order.
2. More than one purchase coupon/post-sales coupon cannot be used for the purchase of one item.
3. Multiple units of order coupon can be used in the same order as long as the total coupon value is less than the required maximum percentage of the order amount.
You can't use two different types of coupon on the same order, e.g. one with no expire date and one with a limit
You can test this yourself, by putting some miners in the cart, going to checkout and seeing what coupon combination you can use.
There are also individual limits on the coupons with regards to what % discount can be applied. This also is specified during the checkout process.
So say you had $2000 worth of miners in your cart, and you had 2 x $147 10% coupons that expire Jan 31, you wouldn't be able to get more than $200 of the $294 face value of the combined coupons off the order.