A Low Cost Pleasant Sounding Used CD Player?

I have had good results from NAD CD players from the early 2000's like the the CD 521 BEE or even the earlier CD 520. They sound good via their native DAC's or as transports. Unfortunately, prone to failures and burnt out displays. Also Rotel's from the same era such as the RCD 951 are good transports. The native DAC's are less listenable (except for HDCD's) but they are built like tanks.

I also have had excellent results with NAD CD players. I still have one in my secondary system. They are smooth sounding, no digital glare. I also enjoyed my Rega Apollo-R, again very smooth. I would have kept it, but when I reconfigured my system, there was no room to accommodate the top loading lid.  

@tsampa Do have SACD cds or planning to buy them?

Regrettably, I don't have any SACDs, though I am very curious to hear one on a decent player.

Richardbrand: Are you suggesting something like a SONY UBP-X800 universal player?

 I have the The Marantz Professional PMD-326C it is a well-regarded commercial CD player known for its high-performance features and versatility, particularly in professional settings like retail, education, and hospitality. It supports CD playback, USB thumb drives with MP3 files, and has a 3.5mm AUX input for other audio devices. Key features include front panel lock, power-on play, direct track access, memory of settings after power loss, and balanced XLR outputs. You can get these under $200, I think I paid $100 and like you I only use once in a while and it sounds good to me. The only draw back is there's no power on/off on the remote, You'd have to turn on/off on the unit , or I hooked mine up to a smart plug controlled by Alexa which it works good.