Got a Meade Pictor Autoguider here. Awesome little unit. Bit of a learning curve when I first bought it, but once your star is centered it is easy to use.
Plug power cable in and then run another cable direct to mount, no computer needed.
Once you get a par focal eyepiece organised and maybe an illumintad reticle to make sure the guide star is centered on the chip, it's a breeze.
$300.
Regards
Ray