From: ard at p850ug1.demon.co.uk (Tony Duell)
I haev found it's impossible to predict the prices that things will
sell...
As a seller I look at the number of watchers:
- 0-9 likely to go for the starting price
- 10-15 likely to be one serious bidder, price tends to dribble up from
the starting price.
- 15+ war likely to be declared between multiple serious bidders and the
price can go ballistic.
A complete, untested PDP-11/10 system (eventually found my variac but too
late to fire up the system) sold for ~$100 from a $0.99 starting price. In
Australia just some of the parts and PCBs for a 1974 Electronics Australia
EDUC-8 microcomputer (contemporary of the MARK-8) has attracted a bid at the
$100 starting price while another auction for PCBs and some parts for a
reproduction MARK-8 has not attracted a bid. All can be explained by the
size and composition of the market. In Australia there are only a very
limited number of people in my city who have an interest in a PDP-11, the
MARK-8 is obscure and relatively unknown as Radio-Electronics magazine had
limited market penetration, while Electronics Australia's EDUC-8
project would have been seen by Australian professionals and enthusiasts
from that era. So these auction prices are currently
related to demand.
I'm in Australia and there can be category mismatches between the eBay.au
site and the rest of the world. So that what you an auction you think
should list into an equivalent category on
eBay.com appears to just
disappear and searches will fail unless your buyers are searching only at
the top eBay level. Most
eBay.com buyers appear to be unaware of this
limitation on searches.
Then there is the opposite of an eBay disaster where the object is just to
find homes for stuff. On eBay you don't have to wait for the end of a 7
day auction to sell something. When trying to find a home for something
oddball like a core memory system from a PDP-11/20 I'd be happy to accept a
$0.99 starting price bid from anybody who expresses the least interest. End
result is a happy buyer and you get the cost of the eBay listing fee
covered. Does surprise people who don't know this option of eBay,
plus this can upset people who expect to snipe an auction.