Upcharge is used as the billing counterpart to marketing's upsell.[1][2] In one context,[2] it means paying a smaller increment in price for a larger increase in what is received; in another it means paying an increase for a non-standard arrangement, what one writer called "upcharge money."[3]
It also may refer to a convenience fee:[4] a pharmacy that carries basic grocery items and charges higher prices for the non-pharmaceutical one-stop-shopping items.[5] While a surcharge is part of what must be paid, an upcharge is not always unexpected,[6] and usually can be declined by rejecting the additional service
or the suggested upgrade,[7][8] albeit receiving less.[1]
The term upcharge is sometimes used when charge (or possibly surcharge) would suffice, similar to the matter of upsurge compared to the simpler words surge and increase.[9][10] "Upcharge attraction" is one description of how amusement parks charge both for admission and then for individual rides.[11]