Free was a good price for that CD player. It's nothing special, and old CD players are not very user-serviceable or valuable. If it works, great, enjoy it til it doesn't. Then you can try to resurrect it in a few simple ways (cleaning the lens, lubing the rails, etc.) and then if it still doesnt work, dump it. I go thru CD players like that all the time. They're pretty much disposable.
As far as Sanyo goes, they're hit and miss in quality. In the 70's, they made some great stuff, and some garbage. In the 80's, pretty much just garbage.
Lady Ayeka's statement that Fisher sucks would be correct for the most part, for the period that she's most familiar with (80's). However, in the early to mid 70's, they made decent equipment, and in the 60's, outstanding equipment. Another case of a name brand changing hands and losing it's identity with each change.