I have stated before that propane is based upon annual usage.
Any price quoted by a supplier without usage is unsubstantiated. It is like giving the answer to a math/physics problem without units.
Irving is quoting $2.049 for 1000 gallons for new customers, but existing customers are charged more. It is designed to lure competing supplier's customers over to their side for that year and then move the price up. It is just capitalistic marketing and is done in almost every industry.
Suppliers need to price their fuel with competing companies or risk losing market share. But the "gimmick" of a one time lower price from the "new" supplier may not be worth it unless the price differential is in the hundreds of dollars. But you could be risking the service side of the equation and that also includes the integrity of the supplier's decision makers.
"Be fair and honest every day of your life"