Do Solars Cost 2.8 GURPS Basic Set Dollars?

[Baoghal]

On page 142 of GURPS Interstellar Wars, it mentions that prices in the IW book are in Terran Solars. It also mentions that each Solar has the buying power of $2.80 in 2000-era Dollars.

Since much of the equipment must be purchased out of other books, and I was under the impression that prices in the Basic Set, Ultra-Tech, etc. are all in 2000-era buying power Dollars, then this rule implies that I need to divide costs in all other books to convert them to Solars, or I need to multiply the costs in the IW books by 2.8 to inflate them the right amount.

Does anyone know what the writer's intent was with the second paragraph under "Terran Wealth" on page 142 of the Interstellar Wars book?