🚀 go-pugleaf

47th St. Whatever (camra, stereo, computer, ???) is indeed into mail order.
I don't happen to have their address or phone number handy, but they usually
advertise in BYTE.  So far as I know, they have an excellent reputation for
low prices and solid service if problems should develop.

Another place you might try is Applied Computer Associates.  They were, as of
a few months ago, beating any legitimate price by $1.  They had the 520ST for
$495 as I recall.  Their phone number is 1-(800) FOR-ATARIS (428-2747).
I have dealt with them as a walk-in customer and believe them to be a very
solid place to put your trust in.  Address is 16220 Frederick Road,
Gaithersburg, MD 20877.  (Southwest corner of Shady Grove Road and 355, for
you locals.  Local phone is (301) 948-0256.)

COMPUCLUB in Framingham, MA (617) 879-5232 seems to be run by good folks also.
Tom Graziano is proprietor.  INWATS phone is 1-(800) MY-ATARI.

Other places with very competitive prices are:

Computer Mail Order (I got good service from them on my one order.)  1-(800)
233-8950.

Black Patch Systems. 1 (800) ATARI02 (757-1302).  Typically the BEST prices on
everything.   (But check on shipping charges, which I haven't compared with
others.

Electronic One.  (614) 864-9994.  Good prices, no experience with them.

CSC, Hightstown, NJ.  (609) 448-8889.  Small but very helpful and competitive.

Re: 520ST 1M upgrade.  This seems to be successful if done right.  Several
people on the net have had success, a couple of others have had problems.
Several people do the upgrade commercially, including COMPUCLUB and Applied
Computer Associates mentioned above.  Price is around $140 to $150.

I hope this is of some help.

-John Sangster
jhs@mitre-bedford.arpa