Apple Computer Inc duly slashed prices up to 37% on most of its Macintosh personal computers and low-end notebook models, and Dell Computer Corp has joined in the fray.Street prices for Macs crashed on the news, with the Classic going for $900 in San Francisco against Apple’s new list price of $1,350. Apple’s reductions range from 9% to $1,500 for a Macintosh Classic with 4Mb memory, to 37% to $3,300 for the Macintosh IIci. In all, it cut prices on 15 desktop models, from Macintosh IIfx machines that were listed at up to $8,669 to the low-end LCs and Classics that started at $1,500. The new price range is $1,500 to $6,400. The PowerBook 100 is off 13% at $2,000 with no external floppy drive. A new 4Mb PowerBook 100 is $2,400, $2,600 with a floppy.The StyleWriter printer is cut 33% to $400. Dell cut prices 4% to 38%, with the biggest percentage cuts on the biggest machines, and cut disks and add-on memory as much as 47%. The System 33P with 4Mb 80386, 4Mb and 100Mb disk is cut 28% to $2,030; the 486P/33 with 230Mb disk is $3,020, off 23%, the 320N+ notebook is cut 17% to $2,500.