Prices of used equipment are "governed" by three things:
Supply and Demand
Condition of equipment
"saleability" of equipment
Here in South Florida we have a glut of used equipment- so much so that a
wheelchair or scooter in brand new condition loses half of its value the
minute it is driven out of the showroom. Other areas of the country may
not have that bad a depreciation, but expect that a piece of equipment
loses at least 1/3 of it's value immediately. And "value" means the
"street value" sale price, not necessarily a highly inflated invoice- that
may have been submitted to an insurance company (and may or may not have
been paid).
If a power wheelchair or scooter was never (or rarely) driven but "sat" for
several months, the batteries have to be replaced so subtract an additional
$200 minimum (depends on the size of the batteries) off of the value.
If power equipment is in "driven" condition, but still in good shape,
subtract a couple of hundred dollars more. Manual chairs (obviously) are
worth less the more they have been used as well.
If the power equipment is in poor condition, it has practically no value-
$100 to $250. Repairs are expensive and parts may not be available for
some brands- particularly older equipment.
If the equipment is one or more of the following:
extra large
highly modified
specialized
difficult to load (even with a lifter)
has a poor service reputation
is discontinued
the manufacturer is out of business or is not "supporting" it
then it may not be saleable at any price.
Many times the equipment was paid for by a third party (Medicare, etc),
the original owner died, and the family just wants it out of the house.
This can create a bargain- or a problem. Many times "title" to the
equipment is with the providing company (insurance company or medical
equipment dealer). Make sure the equipment is "yours" to sell before
proceeding. "Purchased" equipment without "clear title" can present
legal "problems" for the purchaser as well.
Purchasers must realize that batteries should be budgeted for replacement
every year. Anticipate that expense and anticipate that the used power
equipment you purchase will need batteries immediately.
My section on BATTERIES discusses this further.
Many dealers will have used equipment for sale. Just like car dealers, you
will pay more (whether buying or selling) for the chair being "on their
floor" vs a private sale. In exchange, you may (if the dealer is reputable)
get opinions on the condition of the chair, and possibly a warranty
(through the dealer, not the manufacturer). Be wary of dealers that
show a "dirty but new" chair as a "salesman's demo". While it may be,
it could also be a pre-owned chair with no warranty (warranties rarely
apply to equipment sold beyond the "original purchaser" even though the
chair was rarely/never driven). Discuss the warranty with the dealer
(whether it will be provided through him or through the manufacturer)
and get it "in writing".