I'd try it if you could pick categories/pricing levels! And if there were a promise of no doubles if you ordered two (but not promising that after 2).
So say an (beginner vs advanced?) anal grab back would include some a plug, lube, a toy, a prostate toy (if selected), etc. A kegel grab bag might include a kegel exerciser and a book on kegel exercises (We need some of those). A couples grab bag would include a bullet, maybe a dildo, maybe a harness (if the price allows), lube, massage oil, edible lube, etc. The list goes on.
I say with price points comes better toy material and there is a disclaimer that says so. For some packages it would not matter but it would be nice to select toy material or select a safety range. Of course they would be excluded from sales because there is already a discount applied to them.
Grab bags would be more for beginning toy owners or ones who know they don't have a toy in that category. Some people own so many toys that a grab bag will cause them to get doubles and they will complain endlessly about it but that wouldn't be EF's fault.