Not with chewy, iv'e bought 50lb bags of the layer for months and this month a 50lb bag of scratch too.
The only downside is the fedex guy really, really isn't fond of me.
They might have bigger bags available through Chewy which other sites don't carry, but boy is it costly. I was going to order Scratch & Peck as I was having trouble getting the exact feed I wanted, but then I realized that the 25 lb bag online was more expensive than a 40 lb bag from a physical store. Ended up asking a store to make a special order for me and they were able to do so.
Obviously if you happen to live far from a feed store or have restrictions (no car, physical limits) then ordering online might be the only option.