Difference between Overcharge and Gazump

OVERCHARGE vs GAZUMP: NOUN

A load or burden that is too full or heavy.
An excessive charge, load, or burden; the state of being overcharged.
An excessive charge or price.
A charge, as of gunpowder or electricity, beyond what is necessary or sufficient.
A charge of more than is just; a charge that is too high or exorbitant; an exaction.
An excessive load or burden.
A price that is too high
An excessive charge in an account.

Place too much a load on
To continue to charge an electric device beyond its electrical capacity
To charge more money than the correct amount or to surpass a certain limit while charging a bill
Rip off; ask an unreasonable price

To trump or preempt; to reap the benefit underhandedly from a situation that someone else has worked to create.
To buy a property by bidding more than the price of an existing, accepted offer.
To raise the selling price of something (especially property) after previously agreeing to a lower one.
To swindle; to extort.
Rip off; ask an unreasonable price
Raise the price of something after agreeing on a lower price

Overstretch, Overwhelm, Burden, Overburden, Overloading, Gouge, Plume, Soak, Pluck, Gazump, Fleece, Overload, Hook, Rob, Surcharge

Renege, Spurn, Sell, Renegotiate, Negotiate, Negociate, Outbid, Plume, Surcharge, Overcharge, Hook, Fleece, Pluck, Soak, Rob

Surge, Protector, Overhead, Overstretch, Overwhelm, Burden, Overburden, Gouge, Plume, Soak, Gazump, Fleece, Overload, Hook, Surcharge

Tempt, Poach, Nobble, Scupper, Cut price, Deal, Sell, Negotiate, Outbid, Plume, Surcharge, Overcharge, Hook, Fleece, Soak

Which drugstore chain is most likely to overcharge you?
However with low value items sometimes they overcharge.
They will overcharge you for housing and dining.
Report on use of petroleum overcharge restitutionary funds.
OVERCHARGE OR OVERPAYMENT FOR COPY OF PUBLIC INFORMATION.
However, an interesting phenomenon takes place during overcharge.
Well, we know about the overcharge for meals, we know about the overcharge for fuel because of oversight on the ground in Iraq.
In addition, if the overcharge is willful, the landlord is liable for a penalty of three times the amount of the overcharge.
Overcharge: the components in a battery would be damaged by the electrolyte resulting from overcharge.
For more information on overcharge, visit our Rent Increases and Rent Overcharge page.

So, when you successfully gazump someone, you are most likely costing them financially.
Comcast is weighing whether to attempt to gazump that bid too.