Well, no.
A 55# sack of, say, Thomas Fawcett Maris Otter costs $65.99 plus $18.11 for FedEx to ship it the 700 miles to my location. Total = $84.10
At the 10# price with free shipping, that grain costs $1.75 per # or $96.25 for 55 lbs.
But for about $12 more I can get an assortment of grains.
Edit: For Morebeer’s cheapest malt (Briess 2-row) the additional at the 10# price is only about $3.