#1
I just bought a new Epiphone Les Paul Classic yesterday, yet there is no information on the epiphone website about this guitar. Is it rare? Also, what gauge of string are stock on these guitars?
#2
mostly you get 9's as stock, they are sort of "standard gauge".
Rig Winter 2017:

Fender Jazzmaster/Yamaha SG1000
Boss TU-3, DS-2, CS-3, EHX small stone, Danelectro delay
Laney VC30-112 with G12H30 speaker, or Session Rockette 30 for smaller gigs
Elixir Nanoweb 11-49 strings, Dunlop Jazz III XL picks
Shure SM57 mic in front of the amp
#3
The Classic isn't rare, it's just been discontinued as of 2006. Most epi LP Classic and above come with 10s although some have been known come with 9s. It seems to depend on which factory it came out of..