Nope. Here's an example with today's coupon. It's half working. I had prime items in the cart but I removed every thing from my cart and only included the two coupon allowed items.

When looking at both pages, each individual item shows the following.

https://www.renderosity.com/mod/bcs/?ViewProduct=113703

https://www.renderosity.com/mod/bcs/?ViewProduct=114633

"This product is eligible for coupons". Coupons are broken somehow. I could try many different items in different cart tries but it's already close to 7 pm. Last time when I waited (even though the coupon said it worked until midnight on Monday) with trying different cart items it totally never worked and that was with 2 hours to go before the expiration of the coupon. I'll wait until later but well before the time of expiration on this one. I might come back later (hoping for response) but suspect I'll simply use the broken discount for a partial discount. As per the current coupon which is only discounting on one item...

The Renderosity MarketPlace Staff is offering savings to All members. From now thru 11:59pm (CDT) on Thursday, April 14th, ALL members can save 18% off $15 minimum purchase. All Members Coupon

Save 18% on your next purchase(s) of $15 or more. DrinkToSavings18P15

The dust settled, thinking "what a fine home, at least for now" not realizing that doom would soon be coming in the form of a vacuum cleaner.