H2 is expensive period. It's stupid flammable, needs special seals and stuff because the molecule is so small it leaks very easily, and as little as a 10 percent concentration is enough to make it go boom.
Electricity is generally used to make it via Hydrolysis, then it has to be stored in heavy expensive tanks to be transported then pumped into other storage areas, it's costly to move about, you have to pay those costs too, NOT just for the fuel.
Cheaper to just use the electricity, which is much more plentiful.
Hydrogen is used in the Power industry extensively, it is what cools the generators. Depending on the age of the plant, and how well it has been kept up, they can go through a lot of it and need constant topping off, typically once every week or so. The companies who sell it, and ship would much rather provide for a customer who , needs 3trucks to be delivered A,B,C, and D once every 7 days, over someone who may need just a tank or two every so often, so gas stations who may fill up a few cars every few weeks, are very low on their priority list, AND that delivery fee is split across a much smaller volume of the gas delivered, which further jacks the selling price up to you.
BTW when hydrogen burns, it's the same blow torch affect you get with a Lithium battery, less the smoke, stink and toxicity. Still incinerating anything around it though
Aaron