Depends. Is it the version with voice acting (it looks like it; says complete)? Because you'll be in for some cute cutscenes and awesome songs.
I actually only ever played Lunar because I saw it for sale at Walmart in a huge boxed set for like $100, in the pS3 era. I was curious enough as to why they would still have a PS1 game for that much that I had to buy it.
I bought this game solely based on the full page ad in Playstation magazine. I put my hard earned cash down on a pre-order of the complete edition at "Software, Etc." at the shopping mall, sight unseen, with FF7 my only frame of reference on JRPGs. Definitely my favorite JRPG from my childhood.
My only regret is selling it, along with a Ghaleon puppet, on eBay a few years back.
Holy shit, core memory unlocked. I completely forgot that the Gamestop at our local mall was previously "Software, Etc."
Goddamn.
I regret selling all of my PS1 and PS2 games. Back when the other (standalone) Gamestop in my town growing up was still a "Funco Land," I found used copies of Tactics Ogre, and Ogre Battle (I think it was a two-disc Special Edition or something?) on PS1 for very cheap, and then sold them on eBay for like $150. I remember thinking I was so clever... Now I wish I had just kept them.
The buttons on the Miyoo are much better. There are videos on disassembling the SP and putting tape over the buttons to try and fix them.
GarlicOS is much better on the Miyoo compared to SP stock or Muos. It's a super quick save/power off/boot/restore so when you hit power you are back in your game but because it's a real power off instead of sleep, you always have power. (Which is why I stopped using my Restroid.)
The SP can do save/restore but it's slower. The power button is particularly weird. You press power, wait two seconds, light comes on, then it boots.
The only thing the SP has going for it is the form factor.
I sometimes still hum the opening theme to Silver Star Story from my time playing the OG on PSX when it released. The game is just wonderful, hopeful, and fun. Enjoy!