After I objected, he double checked his computer and the price dropped to something like $50 but he swore that's the best he could do.
To make a long story short, it's a load of fertilizer. The Wallmart 2 blocks from the shop carries the correct grade of non-synthetic oil for both my hybrids for $2/quart. They even have the correct OEM oil filter for $3.67.
The only grade of oil which they only had in a synthetic was 0W20 and even that was only $2/qt more.
This is called "bait and switch". It used to be illegal, but I guess nobody enforces those laws now.
Anyway, buyer beware. Ignore the advice at the oil change places. You have to read your owner's manual.