here’s one although I’m not sure what size your looking for.
I bought 300 bulbs to plant last month and buying an auger bit really helped auger
It seriously goes 5x faster this way. I didn't buy the auger from the link I sent you, but its essentially the same.
Also if you have squirrels living near you. You might want to put deer repellent over your bulbs so they don't dig em up and eat em - another problem I had