Yeah but don't get your hopes up, they aren't super great.
There's one called the UFO 8 Pro, it's super cheap (like 40-60 dollars cheap) but it's save state support is kind of iffy and it doesn't support special chips unless you have a game with the special chip plugged into the top of it. Also it only displays old, 8.3 filenames. It does a lot of cool stuff though like cart dumping, save transfers to and from carts and game genie codes.
Then there's the super ever drive china ver. It's a flat out knockoff of the super ever drive. This one is a bit harder to find, but you can typically save 30-40 bucks. People seem to think it has a better interface and for the most part I agree, but it's feature light compared to the other one and I don't think there's any way to play special-chip-dependent games like star fox 2 on it.
I'm torn between those two.
My 8 and 16 bit collections are really light because, as you know, back in the day we rented games. I was thinking a flash cart would be a good excuse to build up my collection. Since I need at least one game per special chip I could start that way.
In contrast the "official" flash carts START at 80 dollars and that's a pcb with no case that you have to cannibalize a cart to steal chips from. The "good" flash cart is 200+ dollars, which is ridiculous. I could buy most of the games I want at eBay retail prices and still come out spending less money.