Perhaps if you live in an area where the word "gypsy" isn't well-known - but it would be in most of Europe at least. And given the history of abuse and oppression (eg: forced sterilization, even before the nazi concentration camps) it's not really a word that should be forgotten - in the sense that forgetting history is a great way to later repeat the same mistakes, and commit similar abuse.
I don't really see how "jipped" doesn't end up pronounced as "gypped" - so the connotation remains. FWIW the Moby Thesaurus lists a long litany of synonyms along the lines of "con man" and "cheat" for the term "gypper".
Slav and slave have different pronunciation, not just different spelling (and actually, 'slav' in the meaning of slavic people was also spelled 'slave' - not sure if that was with a silent 'e' on the end or not). It's also as I understand it a name given to the slavic people by themselves: "Slav \Slav\ (sl[aum]v or sl[a^]v), n.; pl. {Slavs}. [A word originally meaning, intelligible, and used to contrast the people so called with foreigners who spoke languages unintelligible to the Slavs; akin to OSlav. slovo a word, slava fame, Skr. [,c]ru to hear. Cf. {Loud}.] (Ethnol.) One of a race of people occupying a large part of Eastern and Northern Europe, including the Russians, Bulgarians, Roumanians, Servo-Croats, Slovenes, Poles, Czechs, Wends or Sorbs, Slovaks, etc. [Written also {Slave}, and {Sclav}.] [1913 Webster]"
I'm reminded of a quote about what if the German army named their machines of war after the people they tried to exterminate, like the Apache helicopter etc.
I'm not saying we should "prohibit" words, I'm just saying I don't quite see how one could make much of a case for "gypping" being a word that isn't steeped in history of abuse of and discrimination against the Roma people. As recent as the 70s and 80s (and even to this day) for most of Europe. Eg, to quote song "Magnificent Seven" by the Clash: "What Do We Have For Entertainment? / Cops Kickin' Gypsies On The Pavement". (I never interpreted the song any other way than as a critique of systematic abuse by the police, and callousness of mass media - not as a slur by the Clash against "gypsies").
Just because "nigger" is derived from "negro" and means "black" doesn't automatically mean we can choose to pretend black people hasn't been and still are victim of racism, and decide that "nigger is now ok to use".
Because the American speakers who use it don't have a history of discriminating and abusing Roma people? There are barely any Roma people in America to abuse. Certainly in much of Europe Roma people have been treated very badly.
It's certainly true that many portrayals of black people in continental Europe often look very odd or offensive to American eyes.
Or dig deep into English vocabulary and select a more appropriate synonym without the unwanted association: hustled, conned, swindled, scammed, deceived, ripped off, tricked, cheated, flimflammed, bamboozled, bilked, duped, hornswoggled, rooked, fleeced, burned, chiseled, snowed, fast talked, screwed, shafted, bled, suckered, stiffed, milked, gouged, overcharged... there are probably more. Some of them are shaded according to the intent of the other party and how you felt about it.
But I'm not sure any of these apply to the practice under consideration, which is selling substandard produce to people who haven't properly calibrated their expectations.