Originally Posted By: Vern_in_IL
It is dated but this is all I have to go by....
Quote:
Below are just some rambling and wild [censored] guessing based on way too much eBay browsing, and observations. Note that I mostly look at IBM PC stuff but accessories for other systems are always sought after.
A genuine IBM PC, XT, or AT can sell for a couple hundred.
A common clone PC, XT, or AT can go for $50-$100
Early clones such as Columbia Data Products, Eagle Computers, Compaq, Leading Edge, Kaypro, PCs Limited (before they became Dell), are desirable if they are in good condition.
Good monochrome or color monitors perhaps $50-100.
IBM PGA monitors are quite rare - these are often mistaken as non functional because they do not work with VGA and require IBM's PGA video card to operate.
The original NEC Multisync is sought after - it does not use a VGA connector, but can work with VGA, EGA and much more.
Non-standard monitors for proprietary systems - depends on which system.
Late 80's/Early 90s VGA CRTs - Unless they are IBM branded, they are worthless.
Late 1990s, early 2000s VGA CRT - these are the ones everyone wants, as they are higher quality and higher resolution.
TI-99/4a consoles don't go for too much (they were dumped on the market at the end of their life)
TI-99/4a Peripheral Expansion Boxes can go for $100-200 depending if they have installed cards
Corcomp or Myarc disk controllers for the TI-99/4a... well, how big is your bank account?
Laser 128/128ex - $80-$100 perhaps a bit more with accessories. Missing power supply will hurt the price.
Cassette tape recorders designed for computer use - The Tandy CCR-82s are good ones. ~$25 in good condition. Drive belts WILL need replacment, but those are easy to obtain and install.
Condition is important. A non-fucntioning yellowed rustbucket is not worth nearly as much as something in good working condition.
When you say dated: well, in computers, age and computing power is everything! I had 10+ 22 inch Mitsubishi monitors from around 2005 that cost $2000 each new, and tried to sell them around 2010: no takers at all as everybody wanted flat screen. They did not cost me anything, but I recall I had to give them away one by one. I have tons of experience in commercial new and used systems from low end PC's to high end servers, midrange and mainframe, SAN, core telco, enterprise network gear, PBX etc., multi-million dollar deals. About the only solid rules in that game are that: you better get your ROI back in 3-5 years. At best, the hardware will be worthless in 5 years, at worse 3 years. (longer is better here). There are some rare exceptions to this rule of course, but nothing on your list strikes me as desirable. You can always put an item up on eBay for a starting price of $1 plus shipping, and see how it goes. You might get lucky and some collector wants it for their shelf.
I will point out 2 exceptions: First gen Apple I, first gen Altair, very early Apple II. I think first gen Apple I only had about 100 total made, and only 5-10 are known to exist.