I agree. It is very difficult to use the coupon and I will wait until tomorrow...
It is somehow similar for the fast grab sale. I succeded to purchase some prime/clearance items that I had wishlisted (as they will not be discounted further), but besides that...
This might be a good time to bring up 'hidden' sales at Renderosity.
There is actually a LOT of stuff that is discounted currently, but you'll need to use the menus to get to the various pages. Here's one of the 'catch all' pages. You an also sort by Prime, Prime Flash, etc...
You must be registered to see the links
As for the coupon, note that it doesn't seem to work on 'prime' prices. I do wish that Renderosity had a 'sort by coupon eligible' option. Really, the software structure at Renderosity needs a bit of an overhaul, specifically it should 'sort out' the items you already own, can't tell you how many times I've checked a product page only to find out that I already own the item... but at least the sort options are still a lot more useful than at Daz3D.com.
What's more annoying is that at the 'top level' it's not clear which items are coupon eligible. I found a few items that had the 'red' Coupon color on the price on the 'list' page, but when I went to the product page, the product was actually coupon eligible. That being said, it still seems like about 90% of the sale items lock out the coupons.
So I gave up for now. Not too enthused about the grab bag thing as the odds of getting something I don't really want are so high, that happened once already, due to the large number of items in the grab bag pool.
I still prefer the Renderosity shopping experience, but it's stuff like this that I find really annoying...